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Finding the Third Proportional to 11,998.50 and 19,169

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Solution

The third proportional to 11,998.50 and 19,169 is: 30,624.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.50 : 19,169 = 19,169 : x
  2. Step 2: Convert to fraction form
    11,998.50/19,169 = 19,169/x
  3. Step 3: Cross multiply
    11,998.50x = 19,169 × 19,169
  4. Step 4: Simplify right side
    11,998.50x = 367,450,561
  5. Step 5: Solve for x
    x = 367,450,561/11,998.50
  6. Step 6: Final answer
    x = 30,624.71

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.