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Finding the Fourth Proportional to 396,684.76, 595,046.27 and 130,439.38

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Solution

The fourth proportional to 396,684.76, 595,046.27 and 130,439.38 is: 195,665.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,684.76 : 595,046.27 = 130,439.38 : x
  2. Step 2: Convert to fraction form
    396,684.76/595,046.27 = 130,439.38/x
  3. Step 3: Cross multiply
    396,684.76x = 595,046.27 × 130,439.38
  4. Step 4: Simplify right side
    396,684.76x = 77,617,466,530.11
  5. Step 5: Solve for x
    x = 77,617,466,530.11/396,684.76
  6. Step 6: Final answer
    x = 195,665.36

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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.