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Finding the Fourth Proportional to 67,073.72, 92,541.54 and 40,206.42

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Solution

The fourth proportional to 67,073.72, 92,541.54 and 40,206.42 is: 55,472.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,073.72 : 92,541.54 = 40,206.42 : x
  2. Step 2: Convert to fraction form
    67,073.72/92,541.54 = 40,206.42/x
  3. Step 3: Cross multiply
    67,073.72x = 92,541.54 × 40,206.42
  4. Step 4: Simplify right side
    67,073.72x = 3,720,764,435.73
  5. Step 5: Solve for x
    x = 3,720,764,435.73/67,073.72
  6. Step 6: Final answer
    x = 55,472.76

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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.