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Finding the Fourth Proportional to 132,451.70, 198,660.61 and 43,683.20

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Solution

The fourth proportional to 132,451.70, 198,660.61 and 43,683.20 is: 65,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,451.70 : 198,660.61 = 43,683.20 : x
  2. Step 2: Convert to fraction form
    132,451.70/198,660.61 = 43,683.20/x
  3. Step 3: Cross multiply
    132,451.70x = 198,660.61 × 43,683.20
  4. Step 4: Simplify right side
    132,451.70x = 8,678,129,947.03
  5. Step 5: Solve for x
    x = 8,678,129,947.03/132,451.70
  6. Step 6: Final answer
    x = 65,519.20

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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.