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Finding the Fourth Proportional to 422,063.33, 582,424.43 and 231,039.81

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Solution

The fourth proportional to 422,063.33, 582,424.43 and 231,039.81 is: 318,822.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,063.33 : 582,424.43 = 231,039.81 : x
  2. Step 2: Convert to fraction form
    422,063.33/582,424.43 = 231,039.81/x
  3. Step 3: Cross multiply
    422,063.33x = 582,424.43 × 231,039.81
  4. Step 4: Simplify right side
    422,063.33x = 134,563,228,491.36
  5. Step 5: Solve for x
    x = 134,563,228,491.36/422,063.33
  6. Step 6: Final answer
    x = 318,822.37

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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.