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Finding the Third Proportional to 1,789 and 3,761

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Solution

The third proportional to 1,789 and 3,761 is: 7,906.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789 : 3,761 = 3,761 : x
  2. Step 2: Convert to fraction form
    1,789/3,761 = 3,761/x
  3. Step 3: Cross multiply
    1,789x = 3,761 × 3,761
  4. Step 4: Simplify right side
    1,789x = 14,145,121
  5. Step 5: Solve for x
    x = 14,145,121/1,789
  6. Step 6: Final answer
    x = 7,906.72

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.