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Finding the Third Proportional to 916 and 2,380

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Solution

The third proportional to 916 and 2,380 is: 6,183.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    916 : 2,380 = 2,380 : x
  2. Step 2: Convert to fraction form
    916/2,380 = 2,380/x
  3. Step 3: Cross multiply
    916x = 2,380 × 2,380
  4. Step 4: Simplify right side
    916x = 5,664,400
  5. Step 5: Solve for x
    x = 5,664,400/916
  6. Step 6: Final answer
    x = 6,183.84

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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.