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Finding the Fourth Proportional to 114,640.80, 171,961.20 and 52,311.30

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Solution

The fourth proportional to 114,640.80, 171,961.20 and 52,311.30 is: 78,466.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,640.80 : 171,961.20 = 52,311.30 : x
  2. Step 2: Convert to fraction form
    114,640.80/171,961.20 = 52,311.30/x
  3. Step 3: Cross multiply
    114,640.80x = 171,961.20 × 52,311.30
  4. Step 4: Simplify right side
    114,640.80x = 8,995,513,921.56
  5. Step 5: Solve for x
    x = 8,995,513,921.56/114,640.80
  6. Step 6: Final answer
    x = 78,466.95

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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.