125/100 = 425/x. first find x. so multiply both sides by 100
so 125=42500/x. now multiply both sides by x
so 125x=42500. divide both sides by 125
so x=340. now, find 65% of 340. to find this, we set up the proportion (like the previous one) 65/100=x/340
we multiply both sides by 100
so 65=100x/340
multiply both sides by 340
so 22100=100x
divide both sides by 100
so x = 221
which is 65% of the number