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Finding the Third Proportional to 11,980 and 26,312

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Solution

The third proportional to 11,980 and 26,312 is: 57,789.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980 : 26,312 = 26,312 : x
  2. Step 2: Convert to fraction form
    11,980/26,312 = 26,312/x
  3. Step 3: Cross multiply
    11,980x = 26,312 × 26,312
  4. Step 4: Simplify right side
    11,980x = 692,321,344
  5. Step 5: Solve for x
    x = 692,321,344/11,980
  6. Step 6: Final answer
    x = 57,789.76

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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.