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Finding the Fourth Proportional to 192,318.17, 288,489.56 and 73,989.52

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Solution

The fourth proportional to 192,318.17, 288,489.56 and 73,989.52 is: 110,989.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,318.17 : 288,489.56 = 73,989.52 : x
  2. Step 2: Convert to fraction form
    192,318.17/288,489.56 = 73,989.52/x
  3. Step 3: Cross multiply
    192,318.17x = 288,489.56 × 73,989.52
  4. Step 4: Simplify right side
    192,318.17x = 21,345,202,978.24
  5. Step 5: Solve for x
    x = 21,345,202,978.24/192,318.17
  6. Step 6: Final answer
    x = 110,989.01

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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.