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Finding the Fourth Proportional to 447,771.36, 617,450.90 and 345,813.42

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Solution

The fourth proportional to 447,771.36, 617,450.90 and 345,813.42 is: 476,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,771.36 : 617,450.90 = 345,813.42 : x
  2. Step 2: Convert to fraction form
    447,771.36/617,450.90 = 345,813.42/x
  3. Step 3: Cross multiply
    447,771.36x = 617,450.90 × 345,813.42
  4. Step 4: Simplify right side
    447,771.36x = 213,522,807,411.08
  5. Step 5: Solve for x
    x = 213,522,807,411.08/447,771.36
  6. Step 6: Final answer
    x = 476,856.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.