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Finding the Fourth Proportional to 398,423.20, 595,906.80 and 356,605.60

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Solution

The fourth proportional to 398,423.20, 595,906.80 and 356,605.60 is: 533,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,423.20 : 595,906.80 = 356,605.60 : x
  2. Step 2: Convert to fraction form
    398,423.20/595,906.80 = 356,605.60/x
  3. Step 3: Cross multiply
    398,423.20x = 595,906.80 × 356,605.60
  4. Step 4: Simplify right side
    398,423.20x = 212,503,701,958.08
  5. Step 5: Solve for x
    x = 212,503,701,958.08/398,423.20
  6. Step 6: Final answer
    x = 533,361.77

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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.