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Finding the Fourth Proportional to 75,105.92, 103,669.20 and 43,295.96

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Solution

The fourth proportional to 75,105.92, 103,669.20 and 43,295.96 is: 59,761.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,105.92 : 103,669.20 = 43,295.96 : x
  2. Step 2: Convert to fraction form
    75,105.92/103,669.20 = 43,295.96/x
  3. Step 3: Cross multiply
    75,105.92x = 103,669.20 × 43,295.96
  4. Step 4: Simplify right side
    75,105.92x = 4,488,457,536.43
  5. Step 5: Solve for x
    x = 4,488,457,536.43/75,105.92
  6. Step 6: Final answer
    x = 59,761.70

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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.