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Finding the Fourth Proportional to 512,120.11, 768,333.94 and 242,453.78

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Solution

The fourth proportional to 512,120.11, 768,333.94 and 242,453.78 is: 363,753.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,120.11 : 768,333.94 = 242,453.78 : x
  2. Step 2: Convert to fraction form
    512,120.11/768,333.94 = 242,453.78/x
  3. Step 3: Cross multiply
    512,120.11x = 768,333.94 × 242,453.78
  4. Step 4: Simplify right side
    512,120.11x = 186,285,468,138.26
  5. Step 5: Solve for x
    x = 186,285,468,138.26/512,120.11
  6. Step 6: Final answer
    x = 363,753.47

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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.