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Finding the Third Proportional to 925 and 1,131

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Solution

The third proportional to 925 and 1,131 is: 1,382.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    925 : 1,131 = 1,131 : x
  2. Step 2: Convert to fraction form
    925/1,131 = 1,131/x
  3. Step 3: Cross multiply
    925x = 1,131 × 1,131
  4. Step 4: Simplify right side
    925x = 1,279,161
  5. Step 5: Solve for x
    x = 1,279,161/925
  6. Step 6: Final answer
    x = 1,382.88

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.