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Finding the Fourth Proportional to 614,879.21, 848,530.49 and 339,229.56

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Solution

The fourth proportional to 614,879.21, 848,530.49 and 339,229.56 is: 468,135.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,879.21 : 848,530.49 = 339,229.56 : x
  2. Step 2: Convert to fraction form
    614,879.21/848,530.49 = 339,229.56/x
  3. Step 3: Cross multiply
    614,879.21x = 848,530.49 × 339,229.56
  4. Step 4: Simplify right side
    614,879.21x = 287,846,621,163.26
  5. Step 5: Solve for x
    x = 287,846,621,163.26/614,879.21
  6. Step 6: Final answer
    x = 468,135.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.