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Finding the Fourth Proportional to 218,794.55, 328,191.87 and 69,046.52

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Solution

The fourth proportional to 218,794.55, 328,191.87 and 69,046.52 is: 103,569.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,794.55 : 328,191.87 = 69,046.52 : x
  2. Step 2: Convert to fraction form
    218,794.55/328,191.87 = 69,046.52/x
  3. Step 3: Cross multiply
    218,794.55x = 328,191.87 × 69,046.52
  4. Step 4: Simplify right side
    218,794.55x = 22,660,504,874.83
  5. Step 5: Solve for x
    x = 22,660,504,874.83/218,794.55
  6. Step 6: Final answer
    x = 103,569.79

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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.