Finding the Fourth Proportional to 100,821.76, 151,221.12 and 26,955.52
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Solution
The fourth proportional to 100,821.76, 151,221.12 and 26,955.52 is: 40,430.20
Step by Step Solution
- Step 1: Write the proportion equation
100,821.76 : 151,221.12 = 26,955.52 : x - Step 2: Convert to fraction form
100,821.76/151,221.12 = 26,955.52/x - Step 3: Cross multiply
100,821.76x = 151,221.12 × 26,955.52 - Step 4: Simplify right side
100,821.76x = 4,076,243,924.58 - Step 5: Solve for x
x = 4,076,243,924.58/100,821.76 - Step 6: Final answer
x = 40,430.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.