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Finding the Fourth Proportional to 396,005.80, 593,619.90 and 354,015.40

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Solution

The fourth proportional to 396,005.80, 593,619.90 and 354,015.40 is: 530,675.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,005.80 : 593,619.90 = 354,015.40 : x
  2. Step 2: Convert to fraction form
    396,005.80/593,619.90 = 354,015.40/x
  3. Step 3: Cross multiply
    396,005.80x = 593,619.90 × 354,015.40
  4. Step 4: Simplify right side
    396,005.80x = 210,150,586,346.46
  5. Step 5: Solve for x
    x = 210,150,586,346.46/396,005.80
  6. Step 6: Final answer
    x = 530,675.53

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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.