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Finding the Fourth Proportional to 264,821.80, 397,232.70 and 262,978.60

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Solution

The fourth proportional to 264,821.80, 397,232.70 and 262,978.60 is: 394,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,821.80 : 397,232.70 = 262,978.60 : x
  2. Step 2: Convert to fraction form
    264,821.80/397,232.70 = 262,978.60/x
  3. Step 3: Cross multiply
    264,821.80x = 397,232.70 × 262,978.60
  4. Step 4: Simplify right side
    264,821.80x = 104,463,699,320.22
  5. Step 5: Solve for x
    x = 104,463,699,320.22/264,821.80
  6. Step 6: Final answer
    x = 394,467.90

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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.