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Finding the Third Proportional to 4,947 and 10,805

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Solution

The third proportional to 4,947 and 10,805 is: 23,599.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947 : 10,805 = 10,805 : x
  2. Step 2: Convert to fraction form
    4,947/10,805 = 10,805/x
  3. Step 3: Cross multiply
    4,947x = 10,805 × 10,805
  4. Step 4: Simplify right side
    4,947x = 116,748,025
  5. Step 5: Solve for x
    x = 116,748,025/4,947
  6. Step 6: Final answer
    x = 23,599.76

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.