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Finding the Fourth Proportional to 396,066.85, 593,862.99 and 126,078.34

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Solution

The fourth proportional to 396,066.85, 593,862.99 and 126,078.34 is: 189,041.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,066.85 : 593,862.99 = 126,078.34 : x
  2. Step 2: Convert to fraction form
    396,066.85/593,862.99 = 126,078.34/x
  3. Step 3: Cross multiply
    396,066.85x = 593,862.99 × 126,078.34
  4. Step 4: Simplify right side
    396,066.85x = 74,873,259,966.64
  5. Step 5: Solve for x
    x = 74,873,259,966.64/396,066.85
  6. Step 6: Final answer
    x = 189,041.98

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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.