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Finding the Third Proportional to 21,984 and 47,616

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Solution

The third proportional to 21,984 and 47,616 is: 103,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984 : 47,616 = 47,616 : x
  2. Step 2: Convert to fraction form
    21,984/47,616 = 47,616/x
  3. Step 3: Cross multiply
    21,984x = 47,616 × 47,616
  4. Step 4: Simplify right side
    21,984x = 2,267,283,456
  5. Step 5: Solve for x
    x = 2,267,283,456/21,984
  6. Step 6: Final answer
    x = 103,133.34

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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.