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Finding the Fourth Proportional to 6,332.16, 8,732.56 and 3,939.08

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Solution

The fourth proportional to 6,332.16, 8,732.56 and 3,939.08 is: 5,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,332.16 : 8,732.56 = 3,939.08 : x
  2. Step 2: Convert to fraction form
    6,332.16/8,732.56 = 3,939.08/x
  3. Step 3: Cross multiply
    6,332.16x = 8,732.56 × 3,939.08
  4. Step 4: Simplify right side
    6,332.16x = 34,398,252.44
  5. Step 5: Solve for x
    x = 34,398,252.44/6,332.16
  6. Step 6: Final answer
    x = 5,432.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.