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Finding the Fourth Proportional to 8,729.52, 12,046.92 and 5,143.92

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Solution

The fourth proportional to 8,729.52, 12,046.92 and 5,143.92 is: 7,098.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.52 : 12,046.92 = 5,143.92 : x
  2. Step 2: Convert to fraction form
    8,729.52/12,046.92 = 5,143.92/x
  3. Step 3: Cross multiply
    8,729.52x = 12,046.92 × 5,143.92
  4. Step 4: Simplify right side
    8,729.52x = 61,968,392.73
  5. Step 5: Solve for x
    x = 61,968,392.73/8,729.52
  6. Step 6: Final answer
    x = 7,098.72

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