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Finding the Fourth Proportional to 447,435.72, 617,475.96 and 256,485.24

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Solution

The fourth proportional to 447,435.72, 617,475.96 and 256,485.24 is: 353,958.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,435.72 : 617,475.96 = 256,485.24 : x
  2. Step 2: Convert to fraction form
    447,435.72/617,475.96 = 256,485.24/x
  3. Step 3: Cross multiply
    447,435.72x = 617,475.96 × 256,485.24
  4. Step 4: Simplify right side
    447,435.72x = 158,373,469,794.83
  5. Step 5: Solve for x
    x = 158,373,469,794.83/447,435.72
  6. Step 6: Final answer
    x = 353,958.04

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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.