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Finding the Third Proportional to 4,921 and 10,631

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Solution

The third proportional to 4,921 and 10,631 is: 22,966.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921 : 10,631 = 10,631 : x
  2. Step 2: Convert to fraction form
    4,921/10,631 = 10,631/x
  3. Step 3: Cross multiply
    4,921x = 10,631 × 10,631
  4. Step 4: Simplify right side
    4,921x = 113,018,161
  5. Step 5: Solve for x
    x = 113,018,161/4,921
  6. Step 6: Final answer
    x = 22,966.50

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.