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Finding the Fourth Proportional to 132,616.80, 198,752.40 and 61,531.20

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Solution

The fourth proportional to 132,616.80, 198,752.40 and 61,531.20 is: 92,216.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,616.80 : 198,752.40 = 61,531.20 : x
  2. Step 2: Convert to fraction form
    132,616.80/198,752.40 = 61,531.20/x
  3. Step 3: Cross multiply
    132,616.80x = 198,752.40 × 61,531.20
  4. Step 4: Simplify right side
    132,616.80x = 12,229,473,674.88
  5. Step 5: Solve for x
    x = 12,229,473,674.88/132,616.80
  6. Step 6: Final answer
    x = 92,216.62

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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.