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Finding the Fourth Proportional to 318,021.46, 477,092.94 and 104,850.79

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Solution

The fourth proportional to 318,021.46, 477,092.94 and 104,850.79 is: 157,296.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,021.46 : 477,092.94 = 104,850.79 : x
  2. Step 2: Convert to fraction form
    318,021.46/477,092.94 = 104,850.79/x
  3. Step 3: Cross multiply
    318,021.46x = 477,092.94 × 104,850.79
  4. Step 4: Simplify right side
    318,021.46x = 50,023,571,662.42
  5. Step 5: Solve for x
    x = 50,023,571,662.42/318,021.46
  6. Step 6: Final answer
    x = 157,296.21

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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.