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Finding the Fourth Proportional to 69,691.26, 96,170.86 and 39,475.97

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Solution

The fourth proportional to 69,691.26, 96,170.86 and 39,475.97 is: 54,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,691.26 : 96,170.86 = 39,475.97 : x
  2. Step 2: Convert to fraction form
    69,691.26/96,170.86 = 39,475.97/x
  3. Step 3: Cross multiply
    69,691.26x = 96,170.86 × 39,475.97
  4. Step 4: Simplify right side
    69,691.26x = 3,796,437,984.23
  5. Step 5: Solve for x
    x = 3,796,437,984.23/69,691.26
  6. Step 6: Final answer
    x = 54,475.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.