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Finding the Fourth Proportional to 85,410.45, 117,857.46 and 49,593.45

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Solution

The fourth proportional to 85,410.45, 117,857.46 and 49,593.45 is: 68,433.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,410.45 : 117,857.46 = 49,593.45 : x
  2. Step 2: Convert to fraction form
    85,410.45/117,857.46 = 49,593.45/x
  3. Step 3: Cross multiply
    85,410.45x = 117,857.46 × 49,593.45
  4. Step 4: Simplify right side
    85,410.45x = 5,844,958,049.64
  5. Step 5: Solve for x
    x = 5,844,958,049.64/85,410.45
  6. Step 6: Final answer
    x = 68,433.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.