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Finding the Fourth Proportional to 48,747.97, 73,121.62 and 13,687.66

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Solution

The fourth proportional to 48,747.97, 73,121.62 and 13,687.66 is: 20,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,747.97 : 73,121.62 = 13,687.66 : x
  2. Step 2: Convert to fraction form
    48,747.97/73,121.62 = 13,687.66/x
  3. Step 3: Cross multiply
    48,747.97x = 73,121.62 × 13,687.66
  4. Step 4: Simplify right side
    48,747.97x = 1,000,863,873.21
  5. Step 5: Solve for x
    x = 1,000,863,873.21/48,747.97
  6. Step 6: Final answer
    x = 20,531.40

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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.