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Finding the Fourth Proportional to 353,163.40, 529,745.10 and 347,331.40

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Solution

The fourth proportional to 353,163.40, 529,745.10 and 347,331.40 is: 520,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,163.40 : 529,745.10 = 347,331.40 : x
  2. Step 2: Convert to fraction form
    353,163.40/529,745.10 = 347,331.40/x
  3. Step 3: Cross multiply
    353,163.40x = 529,745.10 × 347,331.40
  4. Step 4: Simplify right side
    353,163.40x = 183,997,107,226.14
  5. Step 5: Solve for x
    x = 183,997,107,226.14/353,163.40
  6. Step 6: Final answer
    x = 520,997.10

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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.