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Finding the Fourth Proportional to 264,980.20, 397,640.40 and 146,736.40

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Solution

The fourth proportional to 264,980.20, 397,640.40 and 146,736.40 is: 220,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,980.20 : 397,640.40 = 146,736.40 : x
  2. Step 2: Convert to fraction form
    264,980.20/397,640.40 = 146,736.40/x
  3. Step 3: Cross multiply
    264,980.20x = 397,640.40 × 146,736.40
  4. Step 4: Simplify right side
    264,980.20x = 58,348,320,790.56
  5. Step 5: Solve for x
    x = 58,348,320,790.56/264,980.20
  6. Step 6: Final answer
    x = 220,198.80

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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.