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Finding the Fourth Proportional to 218,715.50, 328,073.46 and 60,948.16

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Solution

The fourth proportional to 218,715.50, 328,073.46 and 60,948.16 is: 91,422.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,715.50 : 328,073.46 = 60,948.16 : x
  2. Step 2: Convert to fraction form
    218,715.50/328,073.46 = 60,948.16/x
  3. Step 3: Cross multiply
    218,715.50x = 328,073.46 × 60,948.16
  4. Step 4: Simplify right side
    218,715.50x = 19,995,471,786.73
  5. Step 5: Solve for x
    x = 19,995,471,786.73/218,715.50
  6. Step 6: Final answer
    x = 91,422.29

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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.