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Finding the Third Proportional to 468 and 1,131

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Solution

The third proportional to 468 and 1,131 is: 2,733.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    468 : 1,131 = 1,131 : x
  2. Step 2: Convert to fraction form
    468/1,131 = 1,131/x
  3. Step 3: Cross multiply
    468x = 1,131 × 1,131
  4. Step 4: Simplify right side
    468x = 1,279,161
  5. Step 5: Solve for x
    x = 1,279,161/468
  6. Step 6: Final answer
    x = 2,733.25

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.