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Finding the Fourth Proportional to 68,995.68, 103,401.32 and 36,908.94

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Solution

The fourth proportional to 68,995.68, 103,401.32 and 36,908.94 is: 55,314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,995.68 : 103,401.32 = 36,908.94 : x
  2. Step 2: Convert to fraction form
    68,995.68/103,401.32 = 36,908.94/x
  3. Step 3: Cross multiply
    68,995.68x = 103,401.32 × 36,908.94
  4. Step 4: Simplify right side
    68,995.68x = 3,816,433,115.80
  5. Step 5: Solve for x
    x = 3,816,433,115.80/68,995.68
  6. Step 6: Final answer
    x = 55,314.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.