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Finding the Fourth Proportional to 236,091.70, 325,797.05 and 128,659.43

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Solution

The fourth proportional to 236,091.70, 325,797.05 and 128,659.43 is: 177,544.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,091.70 : 325,797.05 = 128,659.43 : x
  2. Step 2: Convert to fraction form
    236,091.70/325,797.05 = 128,659.43/x
  3. Step 3: Cross multiply
    236,091.70x = 325,797.05 × 128,659.43
  4. Step 4: Simplify right side
    236,091.70x = 41,916,862,748.68
  5. Step 5: Solve for x
    x = 41,916,862,748.68/236,091.70
  6. Step 6: Final answer
    x = 177,544.84

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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.