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Finding the Fourth Proportional to 67,208.12, 92,745.78 and 36,991.88

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Solution

The fourth proportional to 67,208.12, 92,745.78 and 36,991.88 is: 51,048.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,208.12 : 92,745.78 = 36,991.88 : x
  2. Step 2: Convert to fraction form
    67,208.12/92,745.78 = 36,991.88/x
  3. Step 3: Cross multiply
    67,208.12x = 92,745.78 × 36,991.88
  4. Step 4: Simplify right side
    67,208.12x = 3,430,840,764.27
  5. Step 5: Solve for x
    x = 3,430,840,764.27/67,208.12
  6. Step 6: Final answer
    x = 51,048.01

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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.