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Finding the Fourth Proportional to 159,709.60, 239,449.20 and 104,336.80

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Solution

The fourth proportional to 159,709.60, 239,449.20 and 104,336.80 is: 156,429.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,709.60 : 239,449.20 = 104,336.80 : x
  2. Step 2: Convert to fraction form
    159,709.60/239,449.20 = 104,336.80/x
  3. Step 3: Cross multiply
    159,709.60x = 239,449.20 × 104,336.80
  4. Step 4: Simplify right side
    159,709.60x = 24,983,363,290.56
  5. Step 5: Solve for x
    x = 24,983,363,290.56/159,709.60
  6. Step 6: Final answer
    x = 156,429.94

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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.