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Finding the Fourth Proportional to 433,339.20, 649,231.20 and 371,131.20

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Solution

The fourth proportional to 433,339.20, 649,231.20 and 371,131.20 is: 556,030.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,339.20 : 649,231.20 = 371,131.20 : x
  2. Step 2: Convert to fraction form
    433,339.20/649,231.20 = 371,131.20/x
  3. Step 3: Cross multiply
    433,339.20x = 649,231.20 × 371,131.20
  4. Step 4: Simplify right side
    433,339.20x = 240,949,954,333.44
  5. Step 5: Solve for x
    x = 240,949,954,333.44/433,339.20
  6. Step 6: Final answer
    x = 556,030.83

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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.