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Finding the Third Proportional to 622 and 1,616

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Solution

The third proportional to 622 and 1,616 is: 4,198.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    622 : 1,616 = 1,616 : x
  2. Step 2: Convert to fraction form
    622/1,616 = 1,616/x
  3. Step 3: Cross multiply
    622x = 1,616 × 1,616
  4. Step 4: Simplify right side
    622x = 2,611,456
  5. Step 5: Solve for x
    x = 2,611,456/622
  6. Step 6: Final answer
    x = 4,198.48

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.