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Finding the Fourth Proportional to 92,456.88, 138,682.08 and 25,896.48

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Solution

The fourth proportional to 92,456.88, 138,682.08 and 25,896.48 is: 38,843.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,456.88 : 138,682.08 = 25,896.48 : x
  2. Step 2: Convert to fraction form
    92,456.88/138,682.08 = 25,896.48/x
  3. Step 3: Cross multiply
    92,456.88x = 138,682.08 × 25,896.48
  4. Step 4: Simplify right side
    92,456.88x = 3,591,377,711.08
  5. Step 5: Solve for x
    x = 3,591,377,711.08/92,456.88
  6. Step 6: Final answer
    x = 38,843.81

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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.