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Finding the Fourth Proportional to 168,503.11, 252,863.31 and 108,525.31

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Solution

The fourth proportional to 168,503.11, 252,863.31 and 108,525.31 is: 162,857.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,503.11 : 252,863.31 = 108,525.31 : x
  2. Step 2: Convert to fraction form
    168,503.11/252,863.31 = 108,525.31/x
  3. Step 3: Cross multiply
    168,503.11x = 252,863.31 × 108,525.31
  4. Step 4: Simplify right side
    168,503.11x = 27,442,069,105.38
  5. Step 5: Solve for x
    x = 27,442,069,105.38/168,503.11
  6. Step 6: Final answer
    x = 162,857.94

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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.