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Finding the Third Proportional to 1,216 and 2,637

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Solution

The third proportional to 1,216 and 2,637 is: 5,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216 : 2,637 = 2,637 : x
  2. Step 2: Convert to fraction form
    1,216/2,637 = 2,637/x
  3. Step 3: Cross multiply
    1,216x = 2,637 × 2,637
  4. Step 4: Simplify right side
    1,216x = 6,953,769
  5. Step 5: Solve for x
    x = 6,953,769/1,216
  6. Step 6: Final answer
    x = 5,718.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.