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Finding the Fourth Proportional to 447,169.20, 617,181.12 and 256,310.40

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Solution

The fourth proportional to 447,169.20, 617,181.12 and 256,310.40 is: 353,758.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,169.20 : 617,181.12 = 256,310.40 : x
  2. Step 2: Convert to fraction form
    447,169.20/617,181.12 = 256,310.40/x
  3. Step 3: Cross multiply
    447,169.20x = 617,181.12 × 256,310.40
  4. Step 4: Simplify right side
    447,169.20x = 158,189,939,739.65
  5. Step 5: Solve for x
    x = 158,189,939,739.65/447,169.20
  6. Step 6: Final answer
    x = 353,758.58

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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.