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Finding the Third Proportional to 183,686 and 389,416

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Solution

The third proportional to 183,686 and 389,416 is: 825,565.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,686 : 389,416 = 389,416 : x
  2. Step 2: Convert to fraction form
    183,686/389,416 = 389,416/x
  3. Step 3: Cross multiply
    183,686x = 389,416 × 389,416
  4. Step 4: Simplify right side
    183,686x = 151,644,821,056
  5. Step 5: Solve for x
    x = 151,644,821,056/183,686
  6. Step 6: Final answer
    x = 825,565.48

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.