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Finding the Third Proportional to 5,085 and 5,505

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Solution

The third proportional to 5,085 and 5,505 is: 5,959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085 : 5,505 = 5,505 : x
  2. Step 2: Convert to fraction form
    5,085/5,505 = 5,505/x
  3. Step 3: Cross multiply
    5,085x = 5,505 × 5,505
  4. Step 4: Simplify right side
    5,085x = 30,305,025
  5. Step 5: Solve for x
    x = 30,305,025/5,085
  6. Step 6: Final answer
    x = 5,959.69

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.