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Finding the Fourth Proportional to 168,611.31, 252,910.89 and 42,252.57

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Solution

The fourth proportional to 168,611.31, 252,910.89 and 42,252.57 is: 63,377.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,611.31 : 252,910.89 = 42,252.57 : x
  2. Step 2: Convert to fraction form
    168,611.31/252,910.89 = 42,252.57/x
  3. Step 3: Cross multiply
    168,611.31x = 252,910.89 × 42,252.57
  4. Step 4: Simplify right side
    168,611.31x = 10,686,135,083.49
  5. Step 5: Solve for x
    x = 10,686,135,083.49/168,611.31
  6. Step 6: Final answer
    x = 63,377.33

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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.