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Finding the Third Proportional to 18,891 and 28,057.50

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Solution

The third proportional to 18,891 and 28,057.50 is: 41,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891 : 28,057.50 = 28,057.50 : x
  2. Step 2: Convert to fraction form
    18,891/28,057.50 = 28,057.50/x
  3. Step 3: Cross multiply
    18,891x = 28,057.50 × 28,057.50
  4. Step 4: Simplify right side
    18,891x = 787,223,306.25
  5. Step 5: Solve for x
    x = 787,223,306.25/18,891
  6. Step 6: Final answer
    x = 41,671.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.