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Finding the Fourth Proportional to 132,572.40, 198,639.90 and 124,699.20

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Solution

The fourth proportional to 132,572.40, 198,639.90 and 124,699.20 is: 186,843.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,572.40 : 198,639.90 = 124,699.20 : x
  2. Step 2: Convert to fraction form
    132,572.40/198,639.90 = 124,699.20/x
  3. Step 3: Cross multiply
    132,572.40x = 198,639.90 × 124,699.20
  4. Step 4: Simplify right side
    132,572.40x = 24,770,236,618.08
  5. Step 5: Solve for x
    x = 24,770,236,618.08/132,572.40
  6. Step 6: Final answer
    x = 186,843.09

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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.