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Finding the Fourth Proportional to 396,685.20, 595,416.60 and 197,230.80

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Solution

The fourth proportional to 396,685.20, 595,416.60 and 197,230.80 is: 296,039.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,685.20 : 595,416.60 = 197,230.80 : x
  2. Step 2: Convert to fraction form
    396,685.20/595,416.60 = 197,230.80/x
  3. Step 3: Cross multiply
    396,685.20x = 595,416.60 × 197,230.80
  4. Step 4: Simplify right side
    396,685.20x = 117,434,492,351.28
  5. Step 5: Solve for x
    x = 117,434,492,351.28/396,685.20
  6. Step 6: Final answer
    x = 296,039.51

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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.