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Finding the Fourth Proportional to 67,138.80, 92,649.68 and 36,924.12

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Solution

The fourth proportional to 67,138.80, 92,649.68 and 36,924.12 is: 50,954.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,138.80 : 92,649.68 = 36,924.12 : x
  2. Step 2: Convert to fraction form
    67,138.80/92,649.68 = 36,924.12/x
  3. Step 3: Cross multiply
    67,138.80x = 92,649.68 × 36,924.12
  4. Step 4: Simplify right side
    67,138.80x = 3,421,007,902.28
  5. Step 5: Solve for x
    x = 3,421,007,902.28/67,138.80
  6. Step 6: Final answer
    x = 50,954.26

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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.