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Finding the Fourth Proportional to 330,842.79, 496,217.21 and 106,174.11

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Solution

The fourth proportional to 330,842.79, 496,217.21 and 106,174.11 is: 159,246.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,842.79 : 496,217.21 = 106,174.11 : x
  2. Step 2: Convert to fraction form
    330,842.79/496,217.21 = 106,174.11/x
  3. Step 3: Cross multiply
    330,842.79x = 496,217.21 × 106,174.11
  4. Step 4: Simplify right side
    330,842.79x = 52,685,420,638.43
  5. Step 5: Solve for x
    x = 52,685,420,638.43/330,842.79
  6. Step 6: Final answer
    x = 159,246.09

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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.