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Finding the Fourth Proportional to 11,770.65, 17,639.57 and 8,845.54

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Solution

The fourth proportional to 11,770.65, 17,639.57 and 8,845.54 is: 13,255.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,770.65 : 17,639.57 = 8,845.54 : x
  2. Step 2: Convert to fraction form
    11,770.65/17,639.57 = 8,845.54/x
  3. Step 3: Cross multiply
    11,770.65x = 17,639.57 × 8,845.54
  4. Step 4: Simplify right side
    11,770.65x = 156,031,500.03
  5. Step 5: Solve for x
    x = 156,031,500.03/11,770.65
  6. Step 6: Final answer
    x = 13,255.98

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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.