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Finding the Fourth Proportional to 123,838.88, 170,912.23 and 73,537.88

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Solution

The fourth proportional to 123,838.88, 170,912.23 and 73,537.88 is: 101,490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,838.88 : 170,912.23 = 73,537.88 : x
  2. Step 2: Convert to fraction form
    123,838.88/170,912.23 = 73,537.88/x
  3. Step 3: Cross multiply
    123,838.88x = 170,912.23 × 73,537.88
  4. Step 4: Simplify right side
    123,838.88x = 12,568,522,021.87
  5. Step 5: Solve for x
    x = 12,568,522,021.87/123,838.88
  6. Step 6: Final answer
    x = 101,490.93

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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.