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Finding the Fourth Proportional to 132,422.40, 198,710.40 and 49,324.80

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Solution

The fourth proportional to 132,422.40, 198,710.40 and 49,324.80 is: 74,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,422.40 : 198,710.40 = 49,324.80 : x
  2. Step 2: Convert to fraction form
    132,422.40/198,710.40 = 49,324.80/x
  3. Step 3: Cross multiply
    132,422.40x = 198,710.40 × 49,324.80
  4. Step 4: Simplify right side
    132,422.40x = 9,801,350,737.92
  5. Step 5: Solve for x
    x = 9,801,350,737.92/132,422.40
  6. Step 6: Final answer
    x = 74,015.81

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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.