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Finding the Fourth Proportional to 67,158, 92,691.23 and 38,496.87

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Solution

The fourth proportional to 67,158, 92,691.23 and 38,496.87 is: 53,133.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,158 : 92,691.23 = 38,496.87 : x
  2. Step 2: Convert to fraction form
    67,158/92,691.23 = 38,496.87/x
  3. Step 3: Cross multiply
    67,158x = 92,691.23 × 38,496.87
  4. Step 4: Simplify right side
    67,158x = 3,568,322,038.97
  5. Step 5: Solve for x
    x = 3,568,322,038.97/67,158
  6. Step 6: Final answer
    x = 53,133.24

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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.