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Finding the Fourth Proportional to 400,711.80, 601,067.70 and 251,412.60

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Solution

The fourth proportional to 400,711.80, 601,067.70 and 251,412.60 is: 377,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,711.80 : 601,067.70 = 251,412.60 : x
  2. Step 2: Convert to fraction form
    400,711.80/601,067.70 = 251,412.60/x
  3. Step 3: Cross multiply
    400,711.80x = 601,067.70 × 251,412.60
  4. Step 4: Simplify right side
    400,711.80x = 151,115,993,233.02
  5. Step 5: Solve for x
    x = 151,115,993,233.02/400,711.80
  6. Step 6: Final answer
    x = 377,118.90

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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.