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Finding the Third Proportional to 18,667.13 and 28,488.38

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Solution

The third proportional to 18,667.13 and 28,488.38 is: 43,476.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.13 : 28,488.38 = 28,488.38 : x
  2. Step 2: Convert to fraction form
    18,667.13/28,488.38 = 28,488.38/x
  3. Step 3: Cross multiply
    18,667.13x = 28,488.38 × 28,488.38
  4. Step 4: Simplify right side
    18,667.13x = 811,587,510.14
  5. Step 5: Solve for x
    x = 811,587,510.14/18,667.13
  6. Step 6: Final answer
    x = 43,476.83

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.