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Finding the Fourth Proportional to 417,239.48, 625,908.09 and 132,830.42

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Solution

The fourth proportional to 417,239.48, 625,908.09 and 132,830.42 is: 199,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,239.48 : 625,908.09 = 132,830.42 : x
  2. Step 2: Convert to fraction form
    417,239.48/625,908.09 = 132,830.42/x
  3. Step 3: Cross multiply
    417,239.48x = 625,908.09 × 132,830.42
  4. Step 4: Simplify right side
    417,239.48x = 83,139,634,476.10
  5. Step 5: Solve for x
    x = 83,139,634,476.10/417,239.48
  6. Step 6: Final answer
    x = 199,261.19

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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.