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Finding the Fourth Proportional to 321,589.74, 482,339.93 and 225,235.11

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Solution

The fourth proportional to 321,589.74, 482,339.93 and 225,235.11 is: 337,821.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,589.74 : 482,339.93 = 225,235.11 : x
  2. Step 2: Convert to fraction form
    321,589.74/482,339.93 = 225,235.11/x
  3. Step 3: Cross multiply
    321,589.74x = 482,339.93 × 225,235.11
  4. Step 4: Simplify right side
    321,589.74x = 108,639,886,064.77
  5. Step 5: Solve for x
    x = 108,639,886,064.77/321,589.74
  6. Step 6: Final answer
    x = 337,821.37

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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.