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Finding the Third Proportional to 10,216.50 and 15,621

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Solution

The third proportional to 10,216.50 and 15,621 is: 23,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,216.50 : 15,621 = 15,621 : x
  2. Step 2: Convert to fraction form
    10,216.50/15,621 = 15,621/x
  3. Step 3: Cross multiply
    10,216.50x = 15,621 × 15,621
  4. Step 4: Simplify right side
    10,216.50x = 244,015,641
  5. Step 5: Solve for x
    x = 244,015,641/10,216.50
  6. Step 6: Final answer
    x = 23,884.47

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.