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Finding the Fourth Proportional to 400,679.12, 601,323.44 and 148,198.48

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Solution

The fourth proportional to 400,679.12, 601,323.44 and 148,198.48 is: 222,410.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,679.12 : 601,323.44 = 148,198.48 : x
  2. Step 2: Convert to fraction form
    400,679.12/601,323.44 = 148,198.48/x
  3. Step 3: Cross multiply
    400,679.12x = 601,323.44 × 148,198.48
  4. Step 4: Simplify right side
    400,679.12x = 89,115,219,796.37
  5. Step 5: Solve for x
    x = 89,115,219,796.37/400,679.12
  6. Step 6: Final answer
    x = 222,410.44

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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.