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Finding the Third Proportional to 45,243 and 99,408.38

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Solution

The third proportional to 45,243 and 99,408.38 is: 218,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,243 : 99,408.38 = 99,408.38 : x
  2. Step 2: Convert to fraction form
    45,243/99,408.38 = 99,408.38/x
  3. Step 3: Cross multiply
    45,243x = 99,408.38 × 99,408.38
  4. Step 4: Simplify right side
    45,243x = 9,882,025,020.14
  5. Step 5: Solve for x
    x = 9,882,025,020.14/45,243
  6. Step 6: Final answer
    x = 218,421.08

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Why These Related Problems?

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