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Finding the Fourth Proportional to 417,218.01, 625,619.90 and 132,871.49

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Solution

The fourth proportional to 417,218.01, 625,619.90 and 132,871.49 is: 199,241.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,218.01 : 625,619.90 = 132,871.49 : x
  2. Step 2: Convert to fraction form
    417,218.01/625,619.90 = 132,871.49/x
  3. Step 3: Cross multiply
    417,218.01x = 625,619.90 × 132,871.49
  4. Step 4: Simplify right side
    417,218.01x = 83,127,047,836.80
  5. Step 5: Solve for x
    x = 83,127,047,836.80/417,218.01
  6. Step 6: Final answer
    x = 199,241.27

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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.