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Finding the Third Proportional to 692 and 908

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Solution

The third proportional to 692 and 908 is: 1,191.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    692 : 908 = 908 : x
  2. Step 2: Convert to fraction form
    692/908 = 908/x
  3. Step 3: Cross multiply
    692x = 908 × 908
  4. Step 4: Simplify right side
    692x = 824,464
  5. Step 5: Solve for x
    x = 824,464/692
  6. Step 6: Final answer
    x = 1,191.42

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.