3/4 is 0.75
4/5 is 0.8
We can choose any number between .75 and .8.
5/6 is 0.83, we need a lower number, let's try
5/7 is 0.74, we need a higher number
6/7 is 0.86, we need a lower number
This is not working out, lets see if the result is 0.76, then it is equal to 76/100
4 X 19 = 76
4 X 25 = 100
19/25 is one of the correct answer.