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Finding the Fourth Proportional to 123,256.86, 170,091.01 and 69,546.87

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Solution

The fourth proportional to 123,256.86, 170,091.01 and 69,546.87 is: 95,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,256.86 : 170,091.01 = 69,546.87 : x
  2. Step 2: Convert to fraction form
    123,256.86/170,091.01 = 69,546.87/x
  3. Step 3: Cross multiply
    123,256.86x = 170,091.01 × 69,546.87
  4. Step 4: Simplify right side
    123,256.86x = 11,829,296,761.54
  5. Step 5: Solve for x
    x = 11,829,296,761.54/123,256.86
  6. Step 6: Final answer
    x = 95,972.73

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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.