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Finding the Fourth Proportional to 167,781.40, 251,963.70 and 89,049.40

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Solution

The fourth proportional to 167,781.40, 251,963.70 and 89,049.40 is: 133,728.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,781.40 : 251,963.70 = 89,049.40 : x
  2. Step 2: Convert to fraction form
    167,781.40/251,963.70 = 89,049.40/x
  3. Step 3: Cross multiply
    167,781.40x = 251,963.70 × 89,049.40
  4. Step 4: Simplify right side
    167,781.40x = 22,437,216,306.78
  5. Step 5: Solve for x
    x = 22,437,216,306.78/167,781.40
  6. Step 6: Final answer
    x = 133,728.87

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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.