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Finding the Fourth Proportional to 92,258.48, 138,373.92 and 25,691.78

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Solution

The fourth proportional to 92,258.48, 138,373.92 and 25,691.78 is: 38,533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,258.48 : 138,373.92 = 25,691.78 : x
  2. Step 2: Convert to fraction form
    92,258.48/138,373.92 = 25,691.78/x
  3. Step 3: Cross multiply
    92,258.48x = 138,373.92 × 25,691.78
  4. Step 4: Simplify right side
    92,258.48x = 3,555,072,310.38
  5. Step 5: Solve for x
    x = 3,555,072,310.38/92,258.48
  6. Step 6: Final answer
    x = 38,533.83

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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.