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Finding the Fourth Proportional to 423,689.58, 635,556.24 and 108,149.22

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Solution

The fourth proportional to 423,689.58, 635,556.24 and 108,149.22 is: 162,229.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,689.58 : 635,556.24 = 108,149.22 : x
  2. Step 2: Convert to fraction form
    423,689.58/635,556.24 = 108,149.22/x
  3. Step 3: Cross multiply
    423,689.58x = 635,556.24 × 108,149.22
  4. Step 4: Simplify right side
    423,689.58x = 68,734,911,622.13
  5. Step 5: Solve for x
    x = 68,734,911,622.13/423,689.58
  6. Step 6: Final answer
    x = 162,229.41

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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.