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Finding the Fourth Proportional to 168,609.20, 253,093.76 and 72,593.87

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Solution

The fourth proportional to 168,609.20, 253,093.76 and 72,593.87 is: 108,968.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,609.20 : 253,093.76 = 72,593.87 : x
  2. Step 2: Convert to fraction form
    168,609.20/253,093.76 = 72,593.87/x
  3. Step 3: Cross multiply
    168,609.20x = 253,093.76 × 72,593.87
  4. Step 4: Simplify right side
    168,609.20x = 18,373,055,987.03
  5. Step 5: Solve for x
    x = 18,373,055,987.03/168,609.20
  6. Step 6: Final answer
    x = 108,968.29

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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.