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Finding the Fourth Proportional to 72,992.43, 100,747.89 and 41,179.77

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Solution

The fourth proportional to 72,992.43, 100,747.89 and 41,179.77 is: 56,838.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,992.43 : 100,747.89 = 41,179.77 : x
  2. Step 2: Convert to fraction form
    72,992.43/100,747.89 = 41,179.77/x
  3. Step 3: Cross multiply
    72,992.43x = 100,747.89 × 41,179.77
  4. Step 4: Simplify right side
    72,992.43x = 4,148,774,938.19
  5. Step 5: Solve for x
    x = 4,148,774,938.19/72,992.43
  6. Step 6: Final answer
    x = 56,838.43

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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.