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Finding the Third Proportional to 854 and 1,384

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Solution

The third proportional to 854 and 1,384 is: 2,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    854 : 1,384 = 1,384 : x
  2. Step 2: Convert to fraction form
    854/1,384 = 1,384/x
  3. Step 3: Cross multiply
    854x = 1,384 × 1,384
  4. Step 4: Simplify right side
    854x = 1,915,456
  5. Step 5: Solve for x
    x = 1,915,456/854
  6. Step 6: Final answer
    x = 2,242.92

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.