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Finding the Fourth Proportional to 137,615.40, 206,423.10 and 132,366.60

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Solution

The fourth proportional to 137,615.40, 206,423.10 and 132,366.60 is: 198,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,615.40 : 206,423.10 = 132,366.60 : x
  2. Step 2: Convert to fraction form
    137,615.40/206,423.10 = 132,366.60/x
  3. Step 3: Cross multiply
    137,615.40x = 206,423.10 × 132,366.60
  4. Step 4: Simplify right side
    137,615.40x = 27,323,523,908.46
  5. Step 5: Solve for x
    x = 27,323,523,908.46/137,615.40
  6. Step 6: Final answer
    x = 198,549.90

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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.