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Finding the Fourth Proportional to 236,091.93, 325,806.89 and 128,661.90

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Solution

The fourth proportional to 236,091.93, 325,806.89 and 128,661.90 is: 177,553.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,091.93 : 325,806.89 = 128,661.90 : x
  2. Step 2: Convert to fraction form
    236,091.93/325,806.89 = 128,661.90/x
  3. Step 3: Cross multiply
    236,091.93x = 325,806.89 × 128,661.90
  4. Step 4: Simplify right side
    236,091.93x = 41,918,932,857.18
  5. Step 5: Solve for x
    x = 41,918,932,857.18/236,091.93
  6. Step 6: Final answer
    x = 177,553.43

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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.