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Finding the Fourth Proportional to 481,907.22, 664,813.89 and 290,859.54

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Solution

The fourth proportional to 481,907.22, 664,813.89 and 290,859.54 is: 401,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,907.22 : 664,813.89 = 290,859.54 : x
  2. Step 2: Convert to fraction form
    481,907.22/664,813.89 = 290,859.54/x
  3. Step 3: Cross multiply
    481,907.22x = 664,813.89 × 290,859.54
  4. Step 4: Simplify right side
    481,907.22x = 193,367,462,231.01
  5. Step 5: Solve for x
    x = 193,367,462,231.01/481,907.22
  6. Step 6: Final answer
    x = 401,254.54

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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.