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Finding the Third Proportional to 19,976 and 43,408

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Solution

The third proportional to 19,976 and 43,408 is: 94,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976 : 43,408 = 43,408 : x
  2. Step 2: Convert to fraction form
    19,976/43,408 = 43,408/x
  3. Step 3: Cross multiply
    19,976x = 43,408 × 43,408
  4. Step 4: Simplify right side
    19,976x = 1,884,254,464
  5. Step 5: Solve for x
    x = 1,884,254,464/19,976
  6. Step 6: Final answer
    x = 94,325.91

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.