When the dividend is to increase at a relatively rapid rate for 2 years, what is the reason the 50% and 25% for the increases are used?

Sawchuck Consulting has been profitable for the last 5 years, but it has never paid a dividend. Management has indicated that it plans to pay a $0.25 dividend 3 years from today, then to increase it at a relatively rapid rate for 2 years, and then to increase it at a constant rate of 8.00% thereafter. Management's forecast of the future dividend stream, along with the forecasted growth rates, is shown below. Assuming a required return of 12.00%, what is your estimate of the stock's current value? Year 0 1 2 3 4 5 6 Growth rate NA NA NA NA 50.00% 25.00% 8.00% Dividends $0.000 $0.000 $0.000 $0.250 $0.375 $0.469 $0.506