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Finding the Fourth Proportional to 123,912.60, 185,738.94 and 60,645.48

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Solution

The fourth proportional to 123,912.60, 185,738.94 and 60,645.48 is: 90,904.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,912.60 : 185,738.94 = 60,645.48 : x
  2. Step 2: Convert to fraction form
    123,912.60/185,738.94 = 60,645.48/x
  3. Step 3: Cross multiply
    123,912.60x = 185,738.94 × 60,645.48
  4. Step 4: Simplify right side
    123,912.60x = 11,264,227,170.99
  5. Step 5: Solve for x
    x = 11,264,227,170.99/123,912.60
  6. Step 6: Final answer
    x = 90,904.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.