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Finding the Fourth Proportional to 396,877.92, 595,398.89 and 130,654.41

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Solution

The fourth proportional to 396,877.92, 595,398.89 and 130,654.41 is: 196,008.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,877.92 : 595,398.89 = 130,654.41 : x
  2. Step 2: Convert to fraction form
    396,877.92/595,398.89 = 130,654.41/x
  3. Step 3: Cross multiply
    396,877.92x = 595,398.89 × 130,654.41
  4. Step 4: Simplify right side
    396,877.92x = 77,791,490,687.60
  5. Step 5: Solve for x
    x = 77,791,490,687.60/396,877.92
  6. Step 6: Final answer
    x = 196,008.61

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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.