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Finding the Third Proportional to 1,265 and 2,736

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Solution

The third proportional to 1,265 and 2,736 is: 5,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265 : 2,736 = 2,736 : x
  2. Step 2: Convert to fraction form
    1,265/2,736 = 2,736/x
  3. Step 3: Cross multiply
    1,265x = 2,736 × 2,736
  4. Step 4: Simplify right side
    1,265x = 7,485,696
  5. Step 5: Solve for x
    x = 7,485,696/1,265
  6. Step 6: Final answer
    x = 5,917.55

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.