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Finding the Fourth Proportional to 8,154.72, 11,248.20 and 5,167.44

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Solution

The fourth proportional to 8,154.72, 11,248.20 and 5,167.44 is: 7,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,154.72 : 11,248.20 = 5,167.44 : x
  2. Step 2: Convert to fraction form
    8,154.72/11,248.20 = 5,167.44/x
  3. Step 3: Cross multiply
    8,154.72x = 11,248.20 × 5,167.44
  4. Step 4: Simplify right side
    8,154.72x = 58,124,398.61
  5. Step 5: Solve for x
    x = 58,124,398.61/8,154.72
  6. Step 6: Final answer
    x = 7,127.70

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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.