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Finding the Fourth Proportional to 74,992.89, 103,516.25 and 43,174.47

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Solution

The fourth proportional to 74,992.89, 103,516.25 and 43,174.47 is: 59,595.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,992.89 : 103,516.25 = 43,174.47 : x
  2. Step 2: Convert to fraction form
    74,992.89/103,516.25 = 43,174.47/x
  3. Step 3: Cross multiply
    74,992.89x = 103,516.25 × 43,174.47
  4. Step 4: Simplify right side
    74,992.89x = 4,469,259,230.14
  5. Step 5: Solve for x
    x = 4,469,259,230.14/74,992.89
  6. Step 6: Final answer
    x = 59,595.77

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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.