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Finding the Fourth Proportional to 396,066.68, 593,862.68 and 126,078.20

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Solution

The fourth proportional to 396,066.68, 593,862.68 and 126,078.20 is: 189,041.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,066.68 : 593,862.68 = 126,078.20 : x
  2. Step 2: Convert to fraction form
    396,066.68/593,862.68 = 126,078.20/x
  3. Step 3: Cross multiply
    396,066.68x = 593,862.68 × 126,078.20
  4. Step 4: Simplify right side
    396,066.68x = 74,873,137,741.58
  5. Step 5: Solve for x
    x = 74,873,137,741.58/396,066.68
  6. Step 6: Final answer
    x = 189,041.75

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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.