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Finding the Fourth Proportional to 67,345.38, 92,930.28 and 39,048

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Solution

The fourth proportional to 67,345.38, 92,930.28 and 39,048 is: 53,882.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,345.38 : 92,930.28 = 39,048 : x
  2. Step 2: Convert to fraction form
    67,345.38/92,930.28 = 39,048/x
  3. Step 3: Cross multiply
    67,345.38x = 92,930.28 × 39,048
  4. Step 4: Simplify right side
    67,345.38x = 3,628,741,573.44
  5. Step 5: Solve for x
    x = 3,628,741,573.44/67,345.38
  6. Step 6: Final answer
    x = 53,882.56

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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.