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Finding the Fourth Proportional to 71,663.97, 107,542.79 and 27,291.16

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Solution

The fourth proportional to 71,663.97, 107,542.79 and 27,291.16 is: 40,954.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.97 : 107,542.79 = 27,291.16 : x
  2. Step 2: Convert to fraction form
    71,663.97/107,542.79 = 27,291.16/x
  3. Step 3: Cross multiply
    71,663.97x = 107,542.79 × 27,291.16
  4. Step 4: Simplify right side
    71,663.97x = 2,934,967,589.05
  5. Step 5: Solve for x
    x = 2,934,967,589.05/71,663.97
  6. Step 6: Final answer
    x = 40,954.58

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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.