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Finding the Fourth Proportional to 263,279.20, 394,400.40 and 157,784.80

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Solution

The fourth proportional to 263,279.20, 394,400.40 and 157,784.80 is: 236,366.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,279.20 : 394,400.40 = 157,784.80 : x
  2. Step 2: Convert to fraction form
    263,279.20/394,400.40 = 157,784.80/x
  3. Step 3: Cross multiply
    263,279.20x = 394,400.40 × 157,784.80
  4. Step 4: Simplify right side
    263,279.20x = 62,230,388,233.92
  5. Step 5: Solve for x
    x = 62,230,388,233.92/263,279.20
  6. Step 6: Final answer
    x = 236,366.52

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1.5x scale

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.