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Finding the Fourth Proportional to 12,473.13, 18,712.77 and 3,708

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Solution

The fourth proportional to 12,473.13, 18,712.77 and 3,708 is: 5,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,473.13 : 18,712.77 = 3,708 : x
  2. Step 2: Convert to fraction form
    12,473.13/18,712.77 = 3,708/x
  3. Step 3: Cross multiply
    12,473.13x = 18,712.77 × 3,708
  4. Step 4: Simplify right side
    12,473.13x = 69,386,951.16
  5. Step 5: Solve for x
    x = 69,386,951.16/12,473.13
  6. Step 6: Final answer
    x = 5,562.91

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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.