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Finding the Fourth Proportional to 125,443.96, 188,165.97 and 55,372.48

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Solution

The fourth proportional to 125,443.96, 188,165.97 and 55,372.48 is: 83,058.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,443.96 : 188,165.97 = 55,372.48 : x
  2. Step 2: Convert to fraction form
    125,443.96/188,165.97 = 55,372.48/x
  3. Step 3: Cross multiply
    125,443.96x = 188,165.97 × 55,372.48
  4. Step 4: Simplify right side
    125,443.96x = 10,419,215,940.09
  5. Step 5: Solve for x
    x = 10,419,215,940.09/125,443.96
  6. Step 6: Final answer
    x = 83,058.73

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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.