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Finding the Fourth Proportional to 231,572.70, 347,391.45 and 98,451.90

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Solution

The fourth proportional to 231,572.70, 347,391.45 and 98,451.90 is: 147,691.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,572.70 : 347,391.45 = 98,451.90 : x
  2. Step 2: Convert to fraction form
    231,572.70/347,391.45 = 98,451.90/x
  3. Step 3: Cross multiply
    231,572.70x = 347,391.45 × 98,451.90
  4. Step 4: Simplify right side
    231,572.70x = 34,201,348,296.26
  5. Step 5: Solve for x
    x = 34,201,348,296.26/231,572.70
  6. Step 6: Final answer
    x = 147,691.62

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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.