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Finding the Fourth Proportional to 378,679.31, 568,049.21 and 125,950.67

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Solution

The fourth proportional to 378,679.31, 568,049.21 and 125,950.67 is: 188,936.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,679.31 : 568,049.21 = 125,950.67 : x
  2. Step 2: Convert to fraction form
    378,679.31/568,049.21 = 125,950.67/x
  3. Step 3: Cross multiply
    378,679.31x = 568,049.21 × 125,950.67
  4. Step 4: Simplify right side
    378,679.31x = 71,546,175,122.47
  5. Step 5: Solve for x
    x = 71,546,175,122.47/378,679.31
  6. Step 6: Final answer
    x = 188,936.06

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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.