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Finding the Fourth Proportional to 69,230.31, 103,845.44 and 16,639.79

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Solution

The fourth proportional to 69,230.31, 103,845.44 and 16,639.79 is: 24,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,230.31 : 103,845.44 = 16,639.79 : x
  2. Step 2: Convert to fraction form
    69,230.31/103,845.44 = 16,639.79/x
  3. Step 3: Cross multiply
    69,230.31x = 103,845.44 × 16,639.79
  4. Step 4: Simplify right side
    69,230.31x = 1,727,965,711.63
  5. Step 5: Solve for x
    x = 1,727,965,711.63/69,230.31
  6. Step 6: Final answer
    x = 24,959.67

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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.