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Finding the Third Proportional to 917 and 2,387

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Solution

The third proportional to 917 and 2,387 is: 6,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    917 : 2,387 = 2,387 : x
  2. Step 2: Convert to fraction form
    917/2,387 = 2,387/x
  3. Step 3: Cross multiply
    917x = 2,387 × 2,387
  4. Step 4: Simplify right side
    917x = 5,697,769
  5. Step 5: Solve for x
    x = 5,697,769/917
  6. Step 6: Final answer
    x = 6,213.49

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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.