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Finding the Fourth Proportional to 61,761.12, 92,641.68 and 15,013.92

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Solution

The fourth proportional to 61,761.12, 92,641.68 and 15,013.92 is: 22,520.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,761.12 : 92,641.68 = 15,013.92 : x
  2. Step 2: Convert to fraction form
    61,761.12/92,641.68 = 15,013.92/x
  3. Step 3: Cross multiply
    61,761.12x = 92,641.68 × 15,013.92
  4. Step 4: Simplify right side
    61,761.12x = 1,390,914,772.19
  5. Step 5: Solve for x
    x = 1,390,914,772.19/61,761.12
  6. Step 6: Final answer
    x = 22,520.88

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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.