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Finding the Fourth Proportional to 87,454.92, 131,252.28 and 45,347

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Solution

The fourth proportional to 87,454.92, 131,252.28 and 45,347 is: 68,056.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,454.92 : 131,252.28 = 45,347 : x
  2. Step 2: Convert to fraction form
    87,454.92/131,252.28 = 45,347/x
  3. Step 3: Cross multiply
    87,454.92x = 131,252.28 × 45,347
  4. Step 4: Simplify right side
    87,454.92x = 5,951,897,141.16
  5. Step 5: Solve for x
    x = 5,951,897,141.16/87,454.92
  6. Step 6: Final answer
    x = 68,056.74

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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.