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Finding the Fourth Proportional to 67,206.86, 92,744.74 and 36,991.53

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Solution

The fourth proportional to 67,206.86, 92,744.74 and 36,991.53 is: 51,047.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,206.86 : 92,744.74 = 36,991.53 : x
  2. Step 2: Convert to fraction form
    67,206.86/92,744.74 = 36,991.53/x
  3. Step 3: Cross multiply
    67,206.86x = 92,744.74 × 36,991.53
  4. Step 4: Simplify right side
    67,206.86x = 3,430,769,832.05
  5. Step 5: Solve for x
    x = 3,430,769,832.05/67,206.86
  6. Step 6: Final answer
    x = 51,047.91

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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.