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Finding the Fourth Proportional to 400,793.40, 601,190.10 and 394,572.60

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Solution

The fourth proportional to 400,793.40, 601,190.10 and 394,572.60 is: 591,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,793.40 : 601,190.10 = 394,572.60 : x
  2. Step 2: Convert to fraction form
    400,793.40/601,190.10 = 394,572.60/x
  3. Step 3: Cross multiply
    400,793.40x = 601,190.10 × 394,572.60
  4. Step 4: Simplify right side
    400,793.40x = 237,213,140,851.26
  5. Step 5: Solve for x
    x = 237,213,140,851.26/400,793.40
  6. Step 6: Final answer
    x = 591,858.90

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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.