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Finding the Fourth Proportional to 86,163.88, 129,255.08 and 36,249.05

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Solution

The fourth proportional to 86,163.88, 129,255.08 and 36,249.05 is: 54,377.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,163.88 : 129,255.08 = 36,249.05 : x
  2. Step 2: Convert to fraction form
    86,163.88/129,255.08 = 36,249.05/x
  3. Step 3: Cross multiply
    86,163.88x = 129,255.08 × 36,249.05
  4. Step 4: Simplify right side
    86,163.88x = 4,685,373,857.67
  5. Step 5: Solve for x
    x = 4,685,373,857.67/86,163.88
  6. Step 6: Final answer
    x = 54,377.47

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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.