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Finding the Fourth Proportional to 512,796.38, 769,195.16 and 133,716.78

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Solution

The fourth proportional to 512,796.38, 769,195.16 and 133,716.78 is: 200,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,796.38 : 769,195.16 = 133,716.78 : x
  2. Step 2: Convert to fraction form
    512,796.38/769,195.16 = 133,716.78/x
  3. Step 3: Cross multiply
    512,796.38x = 769,195.16 × 133,716.78
  4. Step 4: Simplify right side
    512,796.38x = 102,854,299,986.79
  5. Step 5: Solve for x
    x = 102,854,299,986.79/512,796.38
  6. Step 6: Final answer
    x = 200,575.32

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Similar ratio
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1.5x scale

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.