If 27 means 27' in diameter, sure, why not?
It is: 9000+100 = 9100
4500 = 100% so 9000 = ((9000/4500)*100) = 200 %
0.0111
9000
9000
20/100 * 9000 = .20 * 9000 = $1800
80% of 9000 = 80/100 X 9000 = 7200
9000 ÷ 90 = 100
3% of 9000 = 9000*3/100 = 270 dollars
9% of 9000 dollars = 9000*9/100 = 810
% rate = 9000/166000 * 100% = 5.42%
15000/9000 x 100 = 166.7%