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Finding the Third Proportional to 18,490.78 and 40,672.13

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Solution

The third proportional to 18,490.78 and 40,672.13 is: 89,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.78 : 40,672.13 = 40,672.13 : x
  2. Step 2: Convert to fraction form
    18,490.78/40,672.13 = 40,672.13/x
  3. Step 3: Cross multiply
    18,490.78x = 40,672.13 × 40,672.13
  4. Step 4: Simplify right side
    18,490.78x = 1,654,221,752.02
  5. Step 5: Solve for x
    x = 1,654,221,752.02/18,490.78
  6. Step 6: Final answer
    x = 89,461.97

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These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.