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Finding the Fourth Proportional to 318,196.70, 477,169.96 and 115,744.75

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Solution

The fourth proportional to 318,196.70, 477,169.96 and 115,744.75 is: 173,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,196.70 : 477,169.96 = 115,744.75 : x
  2. Step 2: Convert to fraction form
    318,196.70/477,169.96 = 115,744.75/x
  3. Step 3: Cross multiply
    318,196.70x = 477,169.96 × 115,744.75
  4. Step 4: Simplify right side
    318,196.70x = 55,229,917,438.35
  5. Step 5: Solve for x
    x = 55,229,917,438.35/318,196.70
  6. Step 6: Final answer
    x = 173,571.62

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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.