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Finding the Fourth Proportional to 217,951.80, 327,186.90 and 123,257.40

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Solution

The fourth proportional to 217,951.80, 327,186.90 and 123,257.40 is: 185,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,951.80 : 327,186.90 = 123,257.40 : x
  2. Step 2: Convert to fraction form
    217,951.80/327,186.90 = 123,257.40/x
  3. Step 3: Cross multiply
    217,951.80x = 327,186.90 × 123,257.40
  4. Step 4: Simplify right side
    217,951.80x = 40,328,206,608.06
  5. Step 5: Solve for x
    x = 40,328,206,608.06/217,951.80
  6. Step 6: Final answer
    x = 185,032.68

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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.