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Finding the Fourth Proportional to 67,992.46, 101,989.63 and 18,072.32

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Solution

The fourth proportional to 67,992.46, 101,989.63 and 18,072.32 is: 27,108.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,992.46 : 101,989.63 = 18,072.32 : x
  2. Step 2: Convert to fraction form
    67,992.46/101,989.63 = 18,072.32/x
  3. Step 3: Cross multiply
    67,992.46x = 101,989.63 × 18,072.32
  4. Step 4: Simplify right side
    67,992.46x = 1,843,188,742.68
  5. Step 5: Solve for x
    x = 1,843,188,742.68/67,992.46
  6. Step 6: Final answer
    x = 27,108.72

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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.