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Finding the Fourth Proportional to 66,786.51, 92,164.17 and 36,571.28

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Solution

The fourth proportional to 66,786.51, 92,164.17 and 36,571.28 is: 50,467.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.51 : 92,164.17 = 36,571.28 : x
  2. Step 2: Convert to fraction form
    66,786.51/92,164.17 = 36,571.28/x
  3. Step 3: Cross multiply
    66,786.51x = 92,164.17 × 36,571.28
  4. Step 4: Simplify right side
    66,786.51x = 3,370,561,206.22
  5. Step 5: Solve for x
    x = 3,370,561,206.22/66,786.51
  6. Step 6: Final answer
    x = 50,467.69

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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.