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Finding the Fourth Proportional to 396,036.67, 593,858.40 and 126,129.63

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Solution

The fourth proportional to 396,036.67, 593,858.40 and 126,129.63 is: 189,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,036.67 : 593,858.40 = 126,129.63 : x
  2. Step 2: Convert to fraction form
    396,036.67/593,858.40 = 126,129.63/x
  3. Step 3: Cross multiply
    396,036.67x = 593,858.40 × 126,129.63
  4. Step 4: Simplify right side
    396,036.67x = 74,903,140,264.39
  5. Step 5: Solve for x
    x = 74,903,140,264.39/396,036.67
  6. Step 6: Final answer
    x = 189,131.83

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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.