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Finding the Third Proportional to 192,868 and 289,111

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Solution

The third proportional to 192,868 and 289,111 is: 433,380.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,868 : 289,111 = 289,111 : x
  2. Step 2: Convert to fraction form
    192,868/289,111 = 289,111/x
  3. Step 3: Cross multiply
    192,868x = 289,111 × 289,111
  4. Step 4: Simplify right side
    192,868x = 83,585,170,321
  5. Step 5: Solve for x
    x = 83,585,170,321/192,868
  6. Step 6: Final answer
    x = 433,380.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.