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Finding the Third Proportional to 7,481 and 11,736

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Solution

The third proportional to 7,481 and 11,736 is: 18,411.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481 : 11,736 = 11,736 : x
  2. Step 2: Convert to fraction form
    7,481/11,736 = 11,736/x
  3. Step 3: Cross multiply
    7,481x = 11,736 × 11,736
  4. Step 4: Simplify right side
    7,481x = 137,733,696
  5. Step 5: Solve for x
    x = 137,733,696/7,481
  6. Step 6: Final answer
    x = 18,411.13

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.