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Finding the Fourth Proportional to 71,987.64, 107,982.18 and 25,241.64

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Solution

The fourth proportional to 71,987.64, 107,982.18 and 25,241.64 is: 37,862.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,987.64 : 107,982.18 = 25,241.64 : x
  2. Step 2: Convert to fraction form
    71,987.64/107,982.18 = 25,241.64/x
  3. Step 3: Cross multiply
    71,987.64x = 107,982.18 × 25,241.64
  4. Step 4: Simplify right side
    71,987.64x = 2,725,647,313.98
  5. Step 5: Solve for x
    x = 2,725,647,313.98/71,987.64
  6. Step 6: Final answer
    x = 37,862.71

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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.