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Finding the Fourth Proportional to 72,431.52, 108,620.64 and 25,034.64

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Solution

The fourth proportional to 72,431.52, 108,620.64 and 25,034.64 is: 37,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,431.52 : 108,620.64 = 25,034.64 : x
  2. Step 2: Convert to fraction form
    72,431.52/108,620.64 = 25,034.64/x
  3. Step 3: Cross multiply
    72,431.52x = 108,620.64 × 25,034.64
  4. Step 4: Simplify right side
    72,431.52x = 2,719,278,618.97
  5. Step 5: Solve for x
    x = 2,719,278,618.97/72,431.52
  6. Step 6: Final answer
    x = 37,542.75

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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.