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Finding the Fourth Proportional to 71,687.22, 107,449.72 and 36,091.97

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Solution

The fourth proportional to 71,687.22, 107,449.72 and 36,091.97 is: 54,097.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,687.22 : 107,449.72 = 36,091.97 : x
  2. Step 2: Convert to fraction form
    71,687.22/107,449.72 = 36,091.97/x
  3. Step 3: Cross multiply
    71,687.22x = 107,449.72 × 36,091.97
  4. Step 4: Simplify right side
    71,687.22x = 3,878,072,070.75
  5. Step 5: Solve for x
    x = 3,878,072,070.75/71,687.22
  6. Step 6: Final answer
    x = 54,097.12

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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.