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Finding the Third Proportional to 394,321 and 855,076

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Solution

The third proportional to 394,321 and 855,076 is: 1,854,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,321 : 855,076 = 855,076 : x
  2. Step 2: Convert to fraction form
    394,321/855,076 = 855,076/x
  3. Step 3: Cross multiply
    394,321x = 855,076 × 855,076
  4. Step 4: Simplify right side
    394,321x = 731,154,965,776
  5. Step 5: Solve for x
    x = 731,154,965,776/394,321
  6. Step 6: Final answer
    x = 1,854,212.60

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.