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Finding the Third Proportional to 4,722.75 and 10,172.25

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Solution

The third proportional to 4,722.75 and 10,172.25 is: 21,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,722.75 : 10,172.25 = 10,172.25 : x
  2. Step 2: Convert to fraction form
    4,722.75/10,172.25 = 10,172.25/x
  3. Step 3: Cross multiply
    4,722.75x = 10,172.25 × 10,172.25
  4. Step 4: Simplify right side
    4,722.75x = 103,474,670.06
  5. Step 5: Solve for x
    x = 103,474,670.06/4,722.75
  6. Step 6: Final answer
    x = 21,909.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.