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Finding the Fourth Proportional to 168,609.96, 253,039.56 and 79,863.60

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Solution

The fourth proportional to 168,609.96, 253,039.56 and 79,863.60 is: 119,854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,609.96 : 253,039.56 = 79,863.60 : x
  2. Step 2: Convert to fraction form
    168,609.96/253,039.56 = 79,863.60/x
  3. Step 3: Cross multiply
    168,609.96x = 253,039.56 × 79,863.60
  4. Step 4: Simplify right side
    168,609.96x = 20,208,650,204.02
  5. Step 5: Solve for x
    x = 20,208,650,204.02/168,609.96
  6. Step 6: Final answer
    x = 119,854.43

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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.