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Finding the Fourth Proportional to 423,872.31, 635,808.77 and 108,329.52

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Solution

The fourth proportional to 423,872.31, 635,808.77 and 108,329.52 is: 162,494.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,872.31 : 635,808.77 = 108,329.52 : x
  2. Step 2: Convert to fraction form
    423,872.31/635,808.77 = 108,329.52/x
  3. Step 3: Cross multiply
    423,872.31x = 635,808.77 × 108,329.52
  4. Step 4: Simplify right side
    423,872.31x = 68,876,858,865.89
  5. Step 5: Solve for x
    x = 68,876,858,865.89/423,872.31
  6. Step 6: Final answer
    x = 162,494.36

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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.