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Finding the Third Proportional to 47,622 and 71,865

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Solution

The third proportional to 47,622 and 71,865 is: 108,449.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,622 : 71,865 = 71,865 : x
  2. Step 2: Convert to fraction form
    47,622/71,865 = 71,865/x
  3. Step 3: Cross multiply
    47,622x = 71,865 × 71,865
  4. Step 4: Simplify right side
    47,622x = 5,164,578,225
  5. Step 5: Solve for x
    x = 5,164,578,225/47,622
  6. Step 6: Final answer
    x = 108,449.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.