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Finding the Third Proportional to 1,916 and 2,718

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Solution

The third proportional to 1,916 and 2,718 is: 3,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916 : 2,718 = 2,718 : x
  2. Step 2: Convert to fraction form
    1,916/2,718 = 2,718/x
  3. Step 3: Cross multiply
    1,916x = 2,718 × 2,718
  4. Step 4: Simplify right side
    1,916x = 7,387,524
  5. Step 5: Solve for x
    x = 7,387,524/1,916
  6. Step 6: Final answer
    x = 3,855.70

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.