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Finding the Fourth Proportional to 512,805.84, 769,209.31 and 133,726.24

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Solution

The fourth proportional to 512,805.84, 769,209.31 and 133,726.24 is: 200,589.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,805.84 : 769,209.31 = 133,726.24 : x
  2. Step 2: Convert to fraction form
    512,805.84/769,209.31 = 133,726.24/x
  3. Step 3: Cross multiply
    512,805.84x = 769,209.31 × 133,726.24
  4. Step 4: Simplify right side
    512,805.84x = 102,863,469,927.96
  5. Step 5: Solve for x
    x = 102,863,469,927.96/512,805.84
  6. Step 6: Final answer
    x = 200,589.51

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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.