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Finding the Fourth Proportional to 533,910.20, 800,865.30 and 280,844.60

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Solution

The fourth proportional to 533,910.20, 800,865.30 and 280,844.60 is: 421,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,910.20 : 800,865.30 = 280,844.60 : x
  2. Step 2: Convert to fraction form
    533,910.20/800,865.30 = 280,844.60/x
  3. Step 3: Cross multiply
    533,910.20x = 800,865.30 × 280,844.60
  4. Step 4: Simplify right side
    533,910.20x = 224,918,694,832.38
  5. Step 5: Solve for x
    x = 224,918,694,832.38/533,910.20
  6. Step 6: Final answer
    x = 421,266.90

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Similar ratio
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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.