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Finding the Third Proportional to 796 and 1,721

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Solution

The third proportional to 796 and 1,721 is: 3,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    796 : 1,721 = 1,721 : x
  2. Step 2: Convert to fraction form
    796/1,721 = 1,721/x
  3. Step 3: Cross multiply
    796x = 1,721 × 1,721
  4. Step 4: Simplify right side
    796x = 2,961,841
  5. Step 5: Solve for x
    x = 2,961,841/796
  6. Step 6: Final answer
    x = 3,720.91

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.