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Finding the Third Proportional to 21,138.75 and 44,634

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Solution

The third proportional to 21,138.75 and 44,634 is: 94,243.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138.75 : 44,634 = 44,634 : x
  2. Step 2: Convert to fraction form
    21,138.75/44,634 = 44,634/x
  3. Step 3: Cross multiply
    21,138.75x = 44,634 × 44,634
  4. Step 4: Simplify right side
    21,138.75x = 1,992,193,956
  5. Step 5: Solve for x
    x = 1,992,193,956/21,138.75
  6. Step 6: Final answer
    x = 94,243.70

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.