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Finding the Fourth Proportional to 317,452.87, 476,174.05 and 127,908.61

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Solution

The fourth proportional to 317,452.87, 476,174.05 and 127,908.61 is: 191,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,452.87 : 476,174.05 = 127,908.61 : x
  2. Step 2: Convert to fraction form
    317,452.87/476,174.05 = 127,908.61/x
  3. Step 3: Cross multiply
    317,452.87x = 476,174.05 × 127,908.61
  4. Step 4: Simplify right side
    317,452.87x = 60,906,760,853.57
  5. Step 5: Solve for x
    x = 60,906,760,853.57/317,452.87
  6. Step 6: Final answer
    x = 191,860.80

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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.