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Finding the Fourth Proportional to 171,163.56, 256,806.17 and 76,385.12

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Solution

The fourth proportional to 171,163.56, 256,806.17 and 76,385.12 is: 114,604.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,163.56 : 256,806.17 = 76,385.12 : x
  2. Step 2: Convert to fraction form
    171,163.56/256,806.17 = 76,385.12/x
  3. Step 3: Cross multiply
    171,163.56x = 256,806.17 × 76,385.12
  4. Step 4: Simplify right side
    171,163.56x = 19,616,170,112.19
  5. Step 5: Solve for x
    x = 19,616,170,112.19/171,163.56
  6. Step 6: Final answer
    x = 114,604.83

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1.5x scale

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.