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Finding the Fourth Proportional to 86,249.99, 129,187.89 and 41,783.51

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Solution

The fourth proportional to 86,249.99, 129,187.89 and 41,783.51 is: 62,584.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,249.99 : 129,187.89 = 41,783.51 : x
  2. Step 2: Convert to fraction form
    86,249.99/129,187.89 = 41,783.51/x
  3. Step 3: Cross multiply
    86,249.99x = 129,187.89 × 41,783.51
  4. Step 4: Simplify right side
    86,249.99x = 5,397,923,816.66
  5. Step 5: Solve for x
    x = 5,397,923,816.66/86,249.99
  6. Step 6: Final answer
    x = 62,584.63

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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.