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Finding the Fourth Proportional to 168,906.71, 232,989.71 and 111,546.56

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Solution

The fourth proportional to 168,906.71, 232,989.71 and 111,546.56 is: 153,867.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,906.71 : 232,989.71 = 111,546.56 : x
  2. Step 2: Convert to fraction form
    168,906.71/232,989.71 = 111,546.56/x
  3. Step 3: Cross multiply
    168,906.71x = 232,989.71 × 111,546.56
  4. Step 4: Simplify right side
    168,906.71x = 25,989,198,943.22
  5. Step 5: Solve for x
    x = 25,989,198,943.22/168,906.71
  6. Step 6: Final answer
    x = 153,867.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.