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Finding the Third Proportional to 12,980 and 27,256

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Solution

The third proportional to 12,980 and 27,256 is: 57,233.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,980 : 27,256 = 27,256 : x
  2. Step 2: Convert to fraction form
    12,980/27,256 = 27,256/x
  3. Step 3: Cross multiply
    12,980x = 27,256 × 27,256
  4. Step 4: Simplify right side
    12,980x = 742,889,536
  5. Step 5: Solve for x
    x = 742,889,536/12,980
  6. Step 6: Final answer
    x = 57,233.40

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.