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Finding the Fourth Proportional to 352,943.80, 529,336.32 and 100,218.94

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Solution

The fourth proportional to 352,943.80, 529,336.32 and 100,218.94 is: 150,305.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,943.80 : 529,336.32 = 100,218.94 : x
  2. Step 2: Convert to fraction form
    352,943.80/529,336.32 = 100,218.94/x
  3. Step 3: Cross multiply
    352,943.80x = 529,336.32 × 100,218.94
  4. Step 4: Simplify right side
    352,943.80x = 53,049,524,893.90
  5. Step 5: Solve for x
    x = 53,049,524,893.90/352,943.80
  6. Step 6: Final answer
    x = 150,305.87

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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.