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Finding the Fourth Proportional to 391,606.89, 587,451.33 and 166,991.06

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Solution

The fourth proportional to 391,606.89, 587,451.33 and 166,991.06 is: 250,504.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,606.89 : 587,451.33 = 166,991.06 : x
  2. Step 2: Convert to fraction form
    391,606.89/587,451.33 = 166,991.06/x
  3. Step 3: Cross multiply
    391,606.89x = 587,451.33 × 166,991.06
  4. Step 4: Simplify right side
    391,606.89x = 98,099,117,357.85
  5. Step 5: Solve for x
    x = 98,099,117,357.85/391,606.89
  6. Step 6: Final answer
    x = 250,504.06

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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.