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Finding the Fourth Proportional to 192,857.87, 289,305.83 and 66,481.49

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Solution

The fourth proportional to 192,857.87, 289,305.83 and 66,481.49 is: 99,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,857.87 : 289,305.83 = 66,481.49 : x
  2. Step 2: Convert to fraction form
    192,857.87/289,305.83 = 66,481.49/x
  3. Step 3: Cross multiply
    192,857.87x = 289,305.83 × 66,481.49
  4. Step 4: Simplify right side
    192,857.87x = 19,233,483,533.56
  5. Step 5: Solve for x
    x = 19,233,483,533.56/192,857.87
  6. Step 6: Final answer
    x = 99,728.80

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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.