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Finding the Fourth Proportional to 603,900.40, 905,850.60 and 404,834.80

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Solution

The fourth proportional to 603,900.40, 905,850.60 and 404,834.80 is: 607,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,900.40 : 905,850.60 = 404,834.80 : x
  2. Step 2: Convert to fraction form
    603,900.40/905,850.60 = 404,834.80/x
  3. Step 3: Cross multiply
    603,900.40x = 905,850.60 × 404,834.80
  4. Step 4: Simplify right side
    603,900.40x = 366,719,846,480.88
  5. Step 5: Solve for x
    x = 366,719,846,480.88/603,900.40
  6. Step 6: Final answer
    x = 607,252.20

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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.