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Finding the Fourth Proportional to 68,794.66, 103,192.17 and 18,875.44

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Solution

The fourth proportional to 68,794.66, 103,192.17 and 18,875.44 is: 28,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,794.66 : 103,192.17 = 18,875.44 : x
  2. Step 2: Convert to fraction form
    68,794.66/103,192.17 = 18,875.44/x
  3. Step 3: Cross multiply
    68,794.66x = 103,192.17 × 18,875.44
  4. Step 4: Simplify right side
    68,794.66x = 1,947,797,613.30
  5. Step 5: Solve for x
    x = 1,947,797,613.30/68,794.66
  6. Step 6: Final answer
    x = 28,313.21

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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.