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Finding the Fourth Proportional to 303,753.20, 455,629.80 and 191,778.80

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Solution

The fourth proportional to 303,753.20, 455,629.80 and 191,778.80 is: 287,668.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,753.20 : 455,629.80 = 191,778.80 : x
  2. Step 2: Convert to fraction form
    303,753.20/455,629.80 = 191,778.80/x
  3. Step 3: Cross multiply
    303,753.20x = 455,629.80 × 191,778.80
  4. Step 4: Simplify right side
    303,753.20x = 87,380,136,288.24
  5. Step 5: Solve for x
    x = 87,380,136,288.24/303,753.20
  6. Step 6: Final answer
    x = 287,668.20

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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.