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Finding the Fourth Proportional to 125,711.58, 188,691.30 and 92,337.96

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Solution

The fourth proportional to 125,711.58, 188,691.30 and 92,337.96 is: 138,597.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,711.58 : 188,691.30 = 92,337.96 : x
  2. Step 2: Convert to fraction form
    125,711.58/188,691.30 = 92,337.96/x
  3. Step 3: Cross multiply
    125,711.58x = 188,691.30 × 92,337.96
  4. Step 4: Simplify right side
    125,711.58x = 17,423,369,711.75
  5. Step 5: Solve for x
    x = 17,423,369,711.75/125,711.58
  6. Step 6: Final answer
    x = 138,597.97

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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.