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Finding the Fourth Proportional to 425,404.99, 638,356.60 and 236,023.77

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Solution

The fourth proportional to 425,404.99, 638,356.60 and 236,023.77 is: 354,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,404.99 : 638,356.60 = 236,023.77 : x
  2. Step 2: Convert to fraction form
    425,404.99/638,356.60 = 236,023.77/x
  3. Step 3: Cross multiply
    425,404.99x = 638,356.60 × 236,023.77
  4. Step 4: Simplify right side
    425,404.99x = 150,667,332,697.62
  5. Step 5: Solve for x
    x = 150,667,332,697.62/425,404.99
  6. Step 6: Final answer
    x = 354,173.87

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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.