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Finding the Fourth Proportional to 192,598.21, 288,840.89 and 72,568.56

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Solution

The fourth proportional to 192,598.21, 288,840.89 and 72,568.56 is: 108,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,598.21 : 288,840.89 = 72,568.56 : x
  2. Step 2: Convert to fraction form
    192,598.21/288,840.89 = 72,568.56/x
  3. Step 3: Cross multiply
    192,598.21x = 288,840.89 × 72,568.56
  4. Step 4: Simplify right side
    192,598.21x = 20,960,766,688.07
  5. Step 5: Solve for x
    x = 20,960,766,688.07/192,598.21
  6. Step 6: Final answer
    x = 108,831.58

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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.