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Finding the Fourth Proportional to 321,131.99, 482,436.36 and 226,580.06

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Solution

The fourth proportional to 321,131.99, 482,436.36 and 226,580.06 is: 340,391.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,131.99 : 482,436.36 = 226,580.06 : x
  2. Step 2: Convert to fraction form
    321,131.99/482,436.36 = 226,580.06/x
  3. Step 3: Cross multiply
    321,131.99x = 482,436.36 × 226,580.06
  4. Step 4: Simplify right side
    321,131.99x = 109,310,456,982.80
  5. Step 5: Solve for x
    x = 109,310,456,982.80/321,131.99
  6. Step 6: Final answer
    x = 340,391.06

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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.