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Finding the Fourth Proportional to 67,161.78, 92,682.60 and 36,947.15

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Solution

The fourth proportional to 67,161.78, 92,682.60 and 36,947.15 is: 50,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,161.78 : 92,682.60 = 36,947.15 : x
  2. Step 2: Convert to fraction form
    67,161.78/92,682.60 = 36,947.15/x
  3. Step 3: Cross multiply
    67,161.78x = 92,682.60 × 36,947.15
  4. Step 4: Simplify right side
    67,161.78x = 3,424,357,461.18
  5. Step 5: Solve for x
    x = 3,424,357,461.18/67,161.78
  6. Step 6: Final answer
    x = 50,986.70

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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.