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Finding the Third Proportional to 18,702.75 and 27,990.75

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Solution

The third proportional to 18,702.75 and 27,990.75 is: 41,891.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.75 : 27,990.75 = 27,990.75 : x
  2. Step 2: Convert to fraction form
    18,702.75/27,990.75 = 27,990.75/x
  3. Step 3: Cross multiply
    18,702.75x = 27,990.75 × 27,990.75
  4. Step 4: Simplify right side
    18,702.75x = 783,482,085.56
  5. Step 5: Solve for x
    x = 783,482,085.56/18,702.75
  6. Step 6: Final answer
    x = 41,891.28

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