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Finding the Fourth Proportional to 317,749.92, 476,624.49 and 81,092.62

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Solution

The fourth proportional to 317,749.92, 476,624.49 and 81,092.62 is: 121,638.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,749.92 : 476,624.49 = 81,092.62 : x
  2. Step 2: Convert to fraction form
    317,749.92/476,624.49 = 81,092.62/x
  3. Step 3: Cross multiply
    317,749.92x = 476,624.49 × 81,092.62
  4. Step 4: Simplify right side
    317,749.92x = 38,650,728,650.26
  5. Step 5: Solve for x
    x = 38,650,728,650.26/317,749.92
  6. Step 6: Final answer
    x = 121,638.83

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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.