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Finding the Fourth Proportional to 125,446.95, 188,170.47 and 55,375.47

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Solution

The fourth proportional to 125,446.95, 188,170.47 and 55,375.47 is: 83,063.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,446.95 : 188,170.47 = 55,375.47 : x
  2. Step 2: Convert to fraction form
    125,446.95/188,170.47 = 55,375.47/x
  3. Step 3: Cross multiply
    125,446.95x = 188,170.47 × 55,375.47
  4. Step 4: Simplify right side
    125,446.95x = 10,420,028,216.37
  5. Step 5: Solve for x
    x = 10,420,028,216.37/125,446.95
  6. Step 6: Final answer
    x = 83,063.22

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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.