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Finding the Fourth Proportional to 136,383.75, 188,213.22 and 75,956.94

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Solution

The fourth proportional to 136,383.75, 188,213.22 and 75,956.94 is: 104,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,383.75 : 188,213.22 = 75,956.94 : x
  2. Step 2: Convert to fraction form
    136,383.75/188,213.22 = 75,956.94/x
  3. Step 3: Cross multiply
    136,383.75x = 188,213.22 × 75,956.94
  4. Step 4: Simplify right side
    136,383.75x = 14,296,100,258.75
  5. Step 5: Solve for x
    x = 14,296,100,258.75/136,383.75
  6. Step 6: Final answer
    x = 104,822.61

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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.