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Finding the Fourth Proportional to 66,755.52, 92,145.66 and 38,472.48

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Solution

The fourth proportional to 66,755.52, 92,145.66 and 38,472.48 is: 53,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,755.52 : 92,145.66 = 38,472.48 : x
  2. Step 2: Convert to fraction form
    66,755.52/92,145.66 = 38,472.48/x
  3. Step 3: Cross multiply
    66,755.52x = 92,145.66 × 38,472.48
  4. Step 4: Simplify right side
    66,755.52x = 3,545,072,061.44
  5. Step 5: Solve for x
    x = 3,545,072,061.44/66,755.52
  6. Step 6: Final answer
    x = 53,105.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.