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Finding the Fourth Proportional to 416,811.70, 625,217.55 and 136,261.30

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Solution

The fourth proportional to 416,811.70, 625,217.55 and 136,261.30 is: 204,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,811.70 : 625,217.55 = 136,261.30 : x
  2. Step 2: Convert to fraction form
    416,811.70/625,217.55 = 136,261.30/x
  3. Step 3: Cross multiply
    416,811.70x = 625,217.55 × 136,261.30
  4. Step 4: Simplify right side
    416,811.70x = 85,192,956,145.82
  5. Step 5: Solve for x
    x = 85,192,956,145.82/416,811.70
  6. Step 6: Final answer
    x = 204,391.95

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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.