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Finding the Fourth Proportional to 396,682.76, 595,043.27 and 130,437.38

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Solution

The fourth proportional to 396,682.76, 595,043.27 and 130,437.38 is: 195,662.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,682.76 : 595,043.27 = 130,437.38 : x
  2. Step 2: Convert to fraction form
    396,682.76/595,043.27 = 130,437.38/x
  3. Step 3: Cross multiply
    396,682.76x = 595,043.27 × 130,437.38
  4. Step 4: Simplify right side
    396,682.76x = 77,615,885,125.43
  5. Step 5: Solve for x
    x = 77,615,885,125.43/396,682.76
  6. Step 6: Final answer
    x = 195,662.36

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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.