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Finding the Third Proportional to 1,880 and 2,874

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Solution

The third proportional to 1,880 and 2,874 is: 4,393.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880 : 2,874 = 2,874 : x
  2. Step 2: Convert to fraction form
    1,880/2,874 = 2,874/x
  3. Step 3: Cross multiply
    1,880x = 2,874 × 2,874
  4. Step 4: Simplify right side
    1,880x = 8,259,876
  5. Step 5: Solve for x
    x = 8,259,876/1,880
  6. Step 6: Final answer
    x = 4,393.55

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.