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Finding the Fourth Proportional to 66,122.65, 91,249.46 and 35,908.48

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Solution

The fourth proportional to 66,122.65, 91,249.46 and 35,908.48 is: 49,553.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,122.65 : 91,249.46 = 35,908.48 : x
  2. Step 2: Convert to fraction form
    66,122.65/91,249.46 = 35,908.48/x
  3. Step 3: Cross multiply
    66,122.65x = 91,249.46 × 35,908.48
  4. Step 4: Simplify right side
    66,122.65x = 3,276,629,409.42
  5. Step 5: Solve for x
    x = 3,276,629,409.42/66,122.65
  6. Step 6: Final answer
    x = 49,553.81

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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.