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Finding the Fourth Proportional to 396,349.32, 594,522.34 and 143,570.64

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Solution

The fourth proportional to 396,349.32, 594,522.34 and 143,570.64 is: 215,355.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,349.32 : 594,522.34 = 143,570.64 : x
  2. Step 2: Convert to fraction form
    396,349.32/594,522.34 = 143,570.64/x
  3. Step 3: Cross multiply
    396,349.32x = 594,522.34 × 143,570.64
  4. Step 4: Simplify right side
    396,349.32x = 85,355,952,848.10
  5. Step 5: Solve for x
    x = 85,355,952,848.10/396,349.32
  6. Step 6: Final answer
    x = 215,355.37

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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.