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Finding the Fourth Proportional to 8,732.90, 13,073.61 and 5,765.90

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Solution

The fourth proportional to 8,732.90, 13,073.61 and 5,765.90 is: 8,631.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,732.90 : 13,073.61 = 5,765.90 : x
  2. Step 2: Convert to fraction form
    8,732.90/13,073.61 = 5,765.90/x
  3. Step 3: Cross multiply
    8,732.90x = 13,073.61 × 5,765.90
  4. Step 4: Simplify right side
    8,732.90x = 75,381,127.90
  5. Step 5: Solve for x
    x = 75,381,127.90/8,732.90
  6. Step 6: Final answer
    x = 8,631.86

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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.