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Finding the Fourth Proportional to 396,113.40, 593,363.70 and 245,892.60

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Solution

The fourth proportional to 396,113.40, 593,363.70 and 245,892.60 is: 368,338.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,113.40 : 593,363.70 = 245,892.60 : x
  2. Step 2: Convert to fraction form
    396,113.40/593,363.70 = 245,892.60/x
  3. Step 3: Cross multiply
    396,113.40x = 593,363.70 × 245,892.60
  4. Step 4: Simplify right side
    396,113.40x = 145,903,742,938.62
  5. Step 5: Solve for x
    x = 145,903,742,938.62/396,113.40
  6. Step 6: Final answer
    x = 368,338.32

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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.