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Finding the Fourth Proportional to 394,069.40, 591,104.10 and 236,475.80

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Solution

The fourth proportional to 394,069.40, 591,104.10 and 236,475.80 is: 354,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,069.40 : 591,104.10 = 236,475.80 : x
  2. Step 2: Convert to fraction form
    394,069.40/591,104.10 = 236,475.80/x
  3. Step 3: Cross multiply
    394,069.40x = 591,104.10 × 236,475.80
  4. Step 4: Simplify right side
    394,069.40x = 139,781,814,930.78
  5. Step 5: Solve for x
    x = 139,781,814,930.78/394,069.40
  6. Step 6: Final answer
    x = 354,713.70

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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.