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Finding the Fourth Proportional to 132,013.40, 198,049.26 and 65,489.72

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Solution

The fourth proportional to 132,013.40, 198,049.26 and 65,489.72 is: 98,249.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,013.40 : 198,049.26 = 65,489.72 : x
  2. Step 2: Convert to fraction form
    132,013.40/198,049.26 = 65,489.72/x
  3. Step 3: Cross multiply
    132,013.40x = 198,049.26 × 65,489.72
  4. Step 4: Simplify right side
    132,013.40x = 12,970,190,583.61
  5. Step 5: Solve for x
    x = 12,970,190,583.61/132,013.40
  6. Step 6: Final answer
    x = 98,249.05

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1.5x scale

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.