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Finding the Fourth Proportional to 396,099.40, 593,342.70 and 245,878.60

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Solution

The fourth proportional to 396,099.40, 593,342.70 and 245,878.60 is: 368,317.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,099.40 : 593,342.70 = 245,878.60 : x
  2. Step 2: Convert to fraction form
    396,099.40/593,342.70 = 245,878.60/x
  3. Step 3: Cross multiply
    396,099.40x = 593,342.70 × 245,878.60
  4. Step 4: Simplify right side
    396,099.40x = 145,890,272,396.22
  5. Step 5: Solve for x
    x = 145,890,272,396.22/396,099.40
  6. Step 6: Final answer
    x = 368,317.33

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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.