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Finding the Third Proportional to 664 and 1,244

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Solution

The third proportional to 664 and 1,244 is: 2,330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    664 : 1,244 = 1,244 : x
  2. Step 2: Convert to fraction form
    664/1,244 = 1,244/x
  3. Step 3: Cross multiply
    664x = 1,244 × 1,244
  4. Step 4: Simplify right side
    664x = 1,547,536
  5. Step 5: Solve for x
    x = 1,547,536/664
  6. Step 6: Final answer
    x = 2,330.63

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.