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Finding the Third Proportional to 798 and 1,719

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Solution

The third proportional to 798 and 1,719 is: 3,702.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    798 : 1,719 = 1,719 : x
  2. Step 2: Convert to fraction form
    798/1,719 = 1,719/x
  3. Step 3: Cross multiply
    798x = 1,719 × 1,719
  4. Step 4: Simplify right side
    798x = 2,954,961
  5. Step 5: Solve for x
    x = 2,954,961/798
  6. Step 6: Final answer
    x = 3,702.96

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.