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Finding the Fourth Proportional to 383,608.15, 575,578.20 and 205,907.65

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Solution

The fourth proportional to 383,608.15, 575,578.20 and 205,907.65 is: 308,950.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,608.15 : 575,578.20 = 205,907.65 : x
  2. Step 2: Convert to fraction form
    383,608.15/575,578.20 = 205,907.65/x
  3. Step 3: Cross multiply
    383,608.15x = 575,578.20 × 205,907.65
  4. Step 4: Simplify right side
    383,608.15x = 118,515,954,553.23
  5. Step 5: Solve for x
    x = 118,515,954,553.23/383,608.15
  6. Step 6: Final answer
    x = 308,950.56

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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.