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Finding the Third Proportional to 467 and 831

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Solution

The third proportional to 467 and 831 is: 1,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    467 : 831 = 831 : x
  2. Step 2: Convert to fraction form
    467/831 = 831/x
  3. Step 3: Cross multiply
    467x = 831 × 831
  4. Step 4: Simplify right side
    467x = 690,561
  5. Step 5: Solve for x
    x = 690,561/467
  6. Step 6: Final answer
    x = 1,478.72

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.