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Finding the Third Proportional to 21,888 and 48,456

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Solution

The third proportional to 21,888 and 48,456 is: 107,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888 : 48,456 = 48,456 : x
  2. Step 2: Convert to fraction form
    21,888/48,456 = 48,456/x
  3. Step 3: Cross multiply
    21,888x = 48,456 × 48,456
  4. Step 4: Simplify right side
    21,888x = 2,347,983,936
  5. Step 5: Solve for x
    x = 2,347,983,936/21,888
  6. Step 6: Final answer
    x = 107,272.66

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.