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Finding the Third Proportional to 6,916 and 11,904

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Solution

The third proportional to 6,916 and 11,904 is: 20,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916 : 11,904 = 11,904 : x
  2. Step 2: Convert to fraction form
    6,916/11,904 = 11,904/x
  3. Step 3: Cross multiply
    6,916x = 11,904 × 11,904
  4. Step 4: Simplify right side
    6,916x = 141,705,216
  5. Step 5: Solve for x
    x = 141,705,216/6,916
  6. Step 6: Final answer
    x = 20,489.48

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Why These Related Problems?

These problems maintain the same ratio (1.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.