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Finding the Third Proportional to 5,576 and 11,991

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Solution

The third proportional to 5,576 and 11,991 is: 25,786.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,576 : 11,991 = 11,991 : x
  2. Step 2: Convert to fraction form
    5,576/11,991 = 11,991/x
  3. Step 3: Cross multiply
    5,576x = 11,991 × 11,991
  4. Step 4: Simplify right side
    5,576x = 143,784,081
  5. Step 5: Solve for x
    x = 143,784,081/5,576
  6. Step 6: Final answer
    x = 25,786.24

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.