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Finding the Third Proportional to 21,912 and 48,216

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Solution

The third proportional to 21,912 and 48,216 is: 106,096.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912 : 48,216 = 48,216 : x
  2. Step 2: Convert to fraction form
    21,912/48,216 = 48,216/x
  3. Step 3: Cross multiply
    21,912x = 48,216 × 48,216
  4. Step 4: Simplify right side
    21,912x = 2,324,782,656
  5. Step 5: Solve for x
    x = 2,324,782,656/21,912
  6. Step 6: Final answer
    x = 106,096.32

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.