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Finding the Fourth Proportional to 417,218.63, 625,620.89 and 132,872.12

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Solution

The fourth proportional to 417,218.63, 625,620.89 and 132,872.12 is: 199,242.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,218.63 : 625,620.89 = 132,872.12 : x
  2. Step 2: Convert to fraction form
    417,218.63/625,620.89 = 132,872.12/x
  3. Step 3: Cross multiply
    417,218.63x = 625,620.89 × 132,872.12
  4. Step 4: Simplify right side
    417,218.63x = 83,127,570,178.12
  5. Step 5: Solve for x
    x = 83,127,570,178.12/417,218.63
  6. Step 6: Final answer
    x = 199,242.23

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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.