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Finding the Third Proportional to 1,086 and 2,901

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Solution

The third proportional to 1,086 and 2,901 is: 7,749.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086 : 2,901 = 2,901 : x
  2. Step 2: Convert to fraction form
    1,086/2,901 = 2,901/x
  3. Step 3: Cross multiply
    1,086x = 2,901 × 2,901
  4. Step 4: Simplify right side
    1,086x = 8,415,801
  5. Step 5: Solve for x
    x = 8,415,801/1,086
  6. Step 6: Final answer
    x = 7,749.36

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Why These Related Problems?

These problems maintain the same ratio (2.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.