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Finding the Fourth Proportional to 66,553.92, 91,925.28 and 52,591.68

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Solution

The fourth proportional to 66,553.92, 91,925.28 and 52,591.68 is: 72,640.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,553.92 : 91,925.28 = 52,591.68 : x
  2. Step 2: Convert to fraction form
    66,553.92/91,925.28 = 52,591.68/x
  3. Step 3: Cross multiply
    66,553.92x = 91,925.28 × 52,591.68
  4. Step 4: Simplify right side
    66,553.92x = 4,834,504,909.67
  5. Step 5: Solve for x
    x = 4,834,504,909.67/66,553.92
  6. Step 6: Final answer
    x = 72,640.42

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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.