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Finding the Fourth Proportional to 92,822.92, 128,092.20 and 50,380.54

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Solution

The fourth proportional to 92,822.92, 128,092.20 and 50,380.54 is: 69,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,822.92 : 128,092.20 = 50,380.54 : x
  2. Step 2: Convert to fraction form
    92,822.92/128,092.20 = 50,380.54/x
  3. Step 3: Cross multiply
    92,822.92x = 128,092.20 × 50,380.54
  4. Step 4: Simplify right side
    92,822.92x = 6,453,354,205.79
  5. Step 5: Solve for x
    x = 6,453,354,205.79/92,822.92
  6. Step 6: Final answer
    x = 69,523.28

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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.