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Finding the Fourth Proportional to 60,691.52, 91,050.27 and 21,249.92

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Solution

The fourth proportional to 60,691.52, 91,050.27 and 21,249.92 is: 31,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,691.52 : 91,050.27 = 21,249.92 : x
  2. Step 2: Convert to fraction form
    60,691.52/91,050.27 = 21,249.92/x
  3. Step 3: Cross multiply
    60,691.52x = 91,050.27 × 21,249.92
  4. Step 4: Simplify right side
    60,691.52x = 1,934,810,953.48
  5. Step 5: Solve for x
    x = 1,934,810,953.48/60,691.52
  6. Step 6: Final answer
    x = 31,879.43

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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.