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Finding the Fourth Proportional to 445,216.97, 666,229.12 and 385,451.02

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Solution

The fourth proportional to 445,216.97, 666,229.12 and 385,451.02 is: 576,794.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,216.97 : 666,229.12 = 385,451.02 : x
  2. Step 2: Convert to fraction form
    445,216.97/666,229.12 = 385,451.02/x
  3. Step 3: Cross multiply
    445,216.97x = 666,229.12 × 385,451.02
  4. Step 4: Simplify right side
    445,216.97x = 256,798,693,857.70
  5. Step 5: Solve for x
    x = 256,798,693,857.70/445,216.97
  6. Step 6: Final answer
    x = 576,794.49

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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.