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Finding the Third Proportional to 4,420 and 11,758

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Solution

The third proportional to 4,420 and 11,758 is: 31,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,420 : 11,758 = 11,758 : x
  2. Step 2: Convert to fraction form
    4,420/11,758 = 11,758/x
  3. Step 3: Cross multiply
    4,420x = 11,758 × 11,758
  4. Step 4: Simplify right side
    4,420x = 138,250,564
  5. Step 5: Solve for x
    x = 138,250,564/4,420
  6. Step 6: Final answer
    x = 31,278.41

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Why These Related Problems?

These problems maintain the same ratio (2.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.