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Finding the Third Proportional to 12,991 and 27,533

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Solution

The third proportional to 12,991 and 27,533 is: 58,353.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991 : 27,533 = 27,533 : x
  2. Step 2: Convert to fraction form
    12,991/27,533 = 27,533/x
  3. Step 3: Cross multiply
    12,991x = 27,533 × 27,533
  4. Step 4: Simplify right side
    12,991x = 758,066,089
  5. Step 5: Solve for x
    x = 758,066,089/12,991
  6. Step 6: Final answer
    x = 58,353.17

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.