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Finding the Third Proportional to 1,478 and 1,881

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Solution

The third proportional to 1,478 and 1,881 is: 2,393.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478 : 1,881 = 1,881 : x
  2. Step 2: Convert to fraction form
    1,478/1,881 = 1,881/x
  3. Step 3: Cross multiply
    1,478x = 1,881 × 1,881
  4. Step 4: Simplify right side
    1,478x = 3,538,161
  5. Step 5: Solve for x
    x = 3,538,161/1,478
  6. Step 6: Final answer
    x = 2,393.88

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.