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Finding the Third Proportional to 18,913.50 and 22,011.75

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Solution

The third proportional to 18,913.50 and 22,011.75 is: 25,617.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.50 : 22,011.75 = 22,011.75 : x
  2. Step 2: Convert to fraction form
    18,913.50/22,011.75 = 22,011.75/x
  3. Step 3: Cross multiply
    18,913.50x = 22,011.75 × 22,011.75
  4. Step 4: Simplify right side
    18,913.50x = 484,517,138.06
  5. Step 5: Solve for x
    x = 484,517,138.06/18,913.50
  6. Step 6: Final answer
    x = 25,617.53

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.