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Finding the Third Proportional to 18,555.19 and 38,933.16

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Solution

The third proportional to 18,555.19 and 38,933.16 is: 81,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.19 : 38,933.16 = 38,933.16 : x
  2. Step 2: Convert to fraction form
    18,555.19/38,933.16 = 38,933.16/x
  3. Step 3: Cross multiply
    18,555.19x = 38,933.16 × 38,933.16
  4. Step 4: Simplify right side
    18,555.19x = 1,515,790,655.59
  5. Step 5: Solve for x
    x = 1,515,790,655.59/18,555.19
  6. Step 6: Final answer
    x = 81,690.94

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.