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Finding the Fourth Proportional to 447,242.70, 617,183.79 and 256,243.79

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Solution

The fourth proportional to 447,242.70, 617,183.79 and 256,243.79 is: 353,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,242.70 : 617,183.79 = 256,243.79 : x
  2. Step 2: Convert to fraction form
    447,242.70/617,183.79 = 256,243.79/x
  3. Step 3: Cross multiply
    447,242.70x = 617,183.79 × 256,243.79
  4. Step 4: Simplify right side
    447,242.70x = 158,149,513,476.16
  5. Step 5: Solve for x
    x = 158,149,513,476.16/447,242.70
  6. Step 6: Final answer
    x = 353,610.05

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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.