0.04 is multiplied 10 times to get 0.004
Equation - x = -3/10 + (10-1)
The original number is 9.3 because
x = -3/10 + (10-1)
x = -3/10 + 9
x = 9.3
1 foot = 12 inches
Therefore:
2 feet = 24 inches
------------------
2 feet x 725 = 1450 feet
------------------
The real tower is 725 times taller than the actual model.
Ratio:
725 : 1
As division is the inverse of multiplication, the rules for division are the same as the rules for multiplication. So when multiplying and dividing positive and negative numbers remember this: If the signs are the same the answer is positive, if the signs are different the answer is negative.