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Finding the Third Proportional to 18,942.75 and 28,414.13

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Solution

The third proportional to 18,942.75 and 28,414.13 is: 42,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.75 : 28,414.13 = 28,414.13 : x
  2. Step 2: Convert to fraction form
    18,942.75/28,414.13 = 28,414.13/x
  3. Step 3: Cross multiply
    18,942.75x = 28,414.13 × 28,414.13
  4. Step 4: Simplify right side
    18,942.75x = 807,362,499.52
  5. Step 5: Solve for x
    x = 807,362,499.52/18,942.75
  6. Step 6: Final answer
    x = 42,621.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.