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Finding the Third Proportional to 917 and 1,627

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Solution

The third proportional to 917 and 1,627 is: 2,886.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    917 : 1,627 = 1,627 : x
  2. Step 2: Convert to fraction form
    917/1,627 = 1,627/x
  3. Step 3: Cross multiply
    917x = 1,627 × 1,627
  4. Step 4: Simplify right side
    917x = 2,647,129
  5. Step 5: Solve for x
    x = 2,647,129/917
  6. Step 6: Final answer
    x = 2,886.73

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.