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Finding the Fourth Proportional to 8,472.35, 11,691.72 and 4,695.52

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Solution

The fourth proportional to 8,472.35, 11,691.72 and 4,695.52 is: 6,479.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.35 : 11,691.72 = 4,695.52 : x
  2. Step 2: Convert to fraction form
    8,472.35/11,691.72 = 4,695.52/x
  3. Step 3: Cross multiply
    8,472.35x = 11,691.72 × 4,695.52
  4. Step 4: Simplify right side
    8,472.35x = 54,898,684.58
  5. Step 5: Solve for x
    x = 54,898,684.58/8,472.35
  6. Step 6: Final answer
    x = 6,479.75

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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.