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Finding the Third Proportional to 766 and 1,423

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Solution

The third proportional to 766 and 1,423 is: 2,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    766 : 1,423 = 1,423 : x
  2. Step 2: Convert to fraction form
    766/1,423 = 1,423/x
  3. Step 3: Cross multiply
    766x = 1,423 × 1,423
  4. Step 4: Simplify right side
    766x = 2,024,929
  5. Step 5: Solve for x
    x = 2,024,929/766
  6. Step 6: Final answer
    x = 2,643.51

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.