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Finding the Fourth Proportional to 8,976.31, 13,470.61 and 3,132.92

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Solution

The fourth proportional to 8,976.31, 13,470.61 and 3,132.92 is: 4,701.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.31 : 13,470.61 = 3,132.92 : x
  2. Step 2: Convert to fraction form
    8,976.31/13,470.61 = 3,132.92/x
  3. Step 3: Cross multiply
    8,976.31x = 13,470.61 × 3,132.92
  4. Step 4: Simplify right side
    8,976.31x = 42,202,311.18
  5. Step 5: Solve for x
    x = 42,202,311.18/8,976.31
  6. Step 6: Final answer
    x = 4,701.52

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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.