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Finding the Third Proportional to 394,480.88 and 558,187.13

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Solution

The third proportional to 394,480.88 and 558,187.13 is: 789,830.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,480.88 : 558,187.13 = 558,187.13 : x
  2. Step 2: Convert to fraction form
    394,480.88/558,187.13 = 558,187.13/x
  3. Step 3: Cross multiply
    394,480.88x = 558,187.13 × 558,187.13
  4. Step 4: Simplify right side
    394,480.88x = 311,572,866,515.77
  5. Step 5: Solve for x
    x = 311,572,866,515.77/394,480.88
  6. Step 6: Final answer
    x = 789,830.09

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These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.