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Finding the Fourth Proportional to 61,456.70, 92,148.60 and 31,932.20

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Solution

The fourth proportional to 61,456.70, 92,148.60 and 31,932.20 is: 47,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,456.70 : 92,148.60 = 31,932.20 : x
  2. Step 2: Convert to fraction form
    61,456.70/92,148.60 = 31,932.20/x
  3. Step 3: Cross multiply
    61,456.70x = 92,148.60 × 31,932.20
  4. Step 4: Simplify right side
    61,456.70x = 2,942,507,524.92
  5. Step 5: Solve for x
    x = 2,942,507,524.92/61,456.70
  6. Step 6: Final answer
    x = 47,879.36

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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.