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Finding the Fourth Proportional to 539,404.20, 809,333.10 and 289,794.60

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Solution

The fourth proportional to 539,404.20, 809,333.10 and 289,794.60 is: 434,813.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,404.20 : 809,333.10 = 289,794.60 : x
  2. Step 2: Convert to fraction form
    539,404.20/809,333.10 = 289,794.60/x
  3. Step 3: Cross multiply
    539,404.20x = 809,333.10 × 289,794.60
  4. Step 4: Simplify right side
    539,404.20x = 234,540,361,981.26
  5. Step 5: Solve for x
    x = 234,540,361,981.26/539,404.20
  6. Step 6: Final answer
    x = 434,813.75

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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.