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Finding the Third Proportional to 183,189 and 393,999

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Solution

The third proportional to 183,189 and 393,999 is: 847,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,189 : 393,999 = 393,999 : x
  2. Step 2: Convert to fraction form
    183,189/393,999 = 393,999/x
  3. Step 3: Cross multiply
    183,189x = 393,999 × 393,999
  4. Step 4: Simplify right side
    183,189x = 155,235,212,001
  5. Step 5: Solve for x
    x = 155,235,212,001/183,189
  6. Step 6: Final answer
    x = 847,404.66

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.