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Finding the Fourth Proportional to 416,686.59, 625,073.81 and 136,203.39

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Solution

The fourth proportional to 416,686.59, 625,073.81 and 136,203.39 is: 204,319.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,686.59 : 625,073.81 = 136,203.39 : x
  2. Step 2: Convert to fraction form
    416,686.59/625,073.81 = 136,203.39/x
  3. Step 3: Cross multiply
    416,686.59x = 625,073.81 × 136,203.39
  4. Step 4: Simplify right side
    416,686.59x = 85,137,171,241.20
  5. Step 5: Solve for x
    x = 85,137,171,241.20/416,686.59
  6. Step 6: Final answer
    x = 204,319.44

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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.