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Finding the Third Proportional to 2,555 and 3,616

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Solution

The third proportional to 2,555 and 3,616 is: 5,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555 : 3,616 = 3,616 : x
  2. Step 2: Convert to fraction form
    2,555/3,616 = 3,616/x
  3. Step 3: Cross multiply
    2,555x = 3,616 × 3,616
  4. Step 4: Simplify right side
    2,555x = 13,075,456
  5. Step 5: Solve for x
    x = 13,075,456/2,555
  6. Step 6: Final answer
    x = 5,117.60

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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.