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Finding the Fourth Proportional to 71,862.96, 107,843.94 and 25,115.84

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Solution

The fourth proportional to 71,862.96, 107,843.94 and 25,115.84 is: 37,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,862.96 : 107,843.94 = 25,115.84 : x
  2. Step 2: Convert to fraction form
    71,862.96/107,843.94 = 25,115.84/x
  3. Step 3: Cross multiply
    71,862.96x = 107,843.94 × 25,115.84
  4. Step 4: Simplify right side
    71,862.96x = 2,708,590,602.79
  5. Step 5: Solve for x
    x = 2,708,590,602.79/71,862.96
  6. Step 6: Final answer
    x = 37,691.05

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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.