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Finding the Fourth Proportional to 311,170.75, 466,562.80 and 131,163.57

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Solution

The fourth proportional to 311,170.75, 466,562.80 and 131,163.57 is: 196,663.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,170.75 : 466,562.80 = 131,163.57 : x
  2. Step 2: Convert to fraction form
    311,170.75/466,562.80 = 131,163.57/x
  3. Step 3: Cross multiply
    311,170.75x = 466,562.80 × 131,163.57
  4. Step 4: Simplify right side
    311,170.75x = 61,196,042,477.20
  5. Step 5: Solve for x
    x = 61,196,042,477.20/311,170.75
  6. Step 6: Final answer
    x = 196,663.87

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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.