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Finding the Fourth Proportional to 396,676.45, 595,102.16 and 130,426.21

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Solution

The fourth proportional to 396,676.45, 595,102.16 and 130,426.21 is: 195,668.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,676.45 : 595,102.16 = 130,426.21 : x
  2. Step 2: Convert to fraction form
    396,676.45/595,102.16 = 130,426.21/x
  3. Step 3: Cross multiply
    396,676.45x = 595,102.16 × 130,426.21
  4. Step 4: Simplify right side
    396,676.45x = 77,616,919,291.61
  5. Step 5: Solve for x
    x = 77,616,919,291.61/396,676.45
  6. Step 6: Final answer
    x = 195,668.08

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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.