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Finding the Third Proportional to 1,086 and 2,388

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Solution

The third proportional to 1,086 and 2,388 is: 5,250.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086 : 2,388 = 2,388 : x
  2. Step 2: Convert to fraction form
    1,086/2,388 = 2,388/x
  3. Step 3: Cross multiply
    1,086x = 2,388 × 2,388
  4. Step 4: Simplify right side
    1,086x = 5,702,544
  5. Step 5: Solve for x
    x = 5,702,544/1,086
  6. Step 6: Final answer
    x = 5,250.96

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.