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Finding the Fourth Proportional to 572,736.30, 859,104.45 and 320,793.90

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Solution

The fourth proportional to 572,736.30, 859,104.45 and 320,793.90 is: 481,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,736.30 : 859,104.45 = 320,793.90 : x
  2. Step 2: Convert to fraction form
    572,736.30/859,104.45 = 320,793.90/x
  3. Step 3: Cross multiply
    572,736.30x = 859,104.45 × 320,793.90
  4. Step 4: Simplify right side
    572,736.30x = 275,595,467,022.86
  5. Step 5: Solve for x
    x = 275,595,467,022.86/572,736.30
  6. Step 6: Final answer
    x = 481,190.85

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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.