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Finding the Fourth Proportional to 68,679.12, 103,018.68 and 37,497.36

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Solution

The fourth proportional to 68,679.12, 103,018.68 and 37,497.36 is: 56,246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,679.12 : 103,018.68 = 37,497.36 : x
  2. Step 2: Convert to fraction form
    68,679.12/103,018.68 = 37,497.36/x
  3. Step 3: Cross multiply
    68,679.12x = 103,018.68 × 37,497.36
  4. Step 4: Simplify right side
    68,679.12x = 3,862,928,530.68
  5. Step 5: Solve for x
    x = 3,862,928,530.68/68,679.12
  6. Step 6: Final answer
    x = 56,246.04

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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.