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Finding the Fourth Proportional to 218,632.62, 327,948.94 and 125,072.76

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Solution

The fourth proportional to 218,632.62, 327,948.94 and 125,072.76 is: 187,609.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,632.62 : 327,948.94 = 125,072.76 : x
  2. Step 2: Convert to fraction form
    218,632.62/327,948.94 = 125,072.76/x
  3. Step 3: Cross multiply
    218,632.62x = 327,948.94 × 125,072.76
  4. Step 4: Simplify right side
    218,632.62x = 41,017,479,064.87
  5. Step 5: Solve for x
    x = 41,017,479,064.87/218,632.62
  6. Step 6: Final answer
    x = 187,609.15

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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.