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Finding the Third Proportional to 927 and 1,642

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Solution

The third proportional to 927 and 1,642 is: 2,908.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    927 : 1,642 = 1,642 : x
  2. Step 2: Convert to fraction form
    927/1,642 = 1,642/x
  3. Step 3: Cross multiply
    927x = 1,642 × 1,642
  4. Step 4: Simplify right side
    927x = 2,696,164
  5. Step 5: Solve for x
    x = 2,696,164/927
  6. Step 6: Final answer
    x = 2,908.48

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.