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Finding the Fourth Proportional to 125,092.61, 172,627.88 and 67,731.97

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Solution

The fourth proportional to 125,092.61, 172,627.88 and 67,731.97 is: 93,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,092.61 : 172,627.88 = 67,731.97 : x
  2. Step 2: Convert to fraction form
    125,092.61/172,627.88 = 67,731.97/x
  3. Step 3: Cross multiply
    125,092.61x = 172,627.88 × 67,731.97
  4. Step 4: Simplify right side
    125,092.61x = 11,692,425,526.18
  5. Step 5: Solve for x
    x = 11,692,425,526.18/125,092.61
  6. Step 6: Final answer
    x = 93,470.16

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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.