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Finding the Fourth Proportional to 139,576.62, 209,446.92 and 50,835.44

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Solution

The fourth proportional to 139,576.62, 209,446.92 and 50,835.44 is: 76,283.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,576.62 : 209,446.92 = 50,835.44 : x
  2. Step 2: Convert to fraction form
    139,576.62/209,446.92 = 50,835.44/x
  3. Step 3: Cross multiply
    139,576.62x = 209,446.92 × 50,835.44
  4. Step 4: Simplify right side
    139,576.62x = 10,647,326,334.84
  5. Step 5: Solve for x
    x = 10,647,326,334.84/139,576.62
  6. Step 6: Final answer
    x = 76,283.02

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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.