Ratios for the Economic Eras
Average K-wave for industrial era = 53.5 years in length
Projected length for industrial era is 53.5 x 10 = 535 years in length
Predicted length for agricultural era from ratio: 535 x 17.632 = 9433
Predicted length for hunter-gatherer era from ratio: 9433.12 x 17.632 = 166,325
The 4th economic era forward utilizes 5.6754% drop in time to complete the previous eras.

Hunter-Gatherer era – 176,000 to 9675 was 166,325 years in length
Agricultural era – 7675bce to 1768ce was 9,433 years in length
Industrial era – 1768 to 2303 could be 535 years in length

Ratios for Transition Periods
Hunter-Gatherer era: 166,325 years in length
176000-111134------ inheritance, 64,866 years in length
111134-76205-------- impact, 34,929 years in length
76205-44604--------- update, 31,601 years in length
44604-17992-- ------ transmission, 26,612 years in length
17992-9675---------- undercurrents, 8,317 years in length

Agricultural Era used to determine length of Transition Periods
Agricultural era: 9,433 years in length
7675-4000bce----- inheritance, 3675 years - roughly 38.9589738%
4000-2000bce------- impact, 2000 years roughly - 21.2021626%
2000-200bce-------- update, 1800 years roughly - 19.0819463%
200bce-1300ce----- transmission, 1500 years - roughly 15.9016219%
1300-1768ce-------- undercurrents, 468 years – roughly 4.961306%

First four Industrial Era K-waves average used to determine length of K-waves in prior eras.
Machine era: 535 years in length
1768-1976-------- inheritance length = 208.5 years
1976-2089----------- impact length= 113.4 years
2089-2191----------- update length= 102 years
2191-2276----------- transmission length= 85 years
2276-2303----------- undercurrents length= 26.5 years