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Finding the Third Proportional to 867 and 2,055

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Solution

The third proportional to 867 and 2,055 is: 4,870.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    867 : 2,055 = 2,055 : x
  2. Step 2: Convert to fraction form
    867/2,055 = 2,055/x
  3. Step 3: Cross multiply
    867x = 2,055 × 2,055
  4. Step 4: Simplify right side
    867x = 4,223,025
  5. Step 5: Solve for x
    x = 4,223,025/867
  6. Step 6: Final answer
    x = 4,870.85

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.