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Finding the Fourth Proportional to 75,978.20, 104,833.68 and 44,130.62

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Solution

The fourth proportional to 75,978.20, 104,833.68 and 44,130.62 is: 60,890.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,978.20 : 104,833.68 = 44,130.62 : x
  2. Step 2: Convert to fraction form
    75,978.20/104,833.68 = 44,130.62/x
  3. Step 3: Cross multiply
    75,978.20x = 104,833.68 × 44,130.62
  4. Step 4: Simplify right side
    75,978.20x = 4,626,375,295.28
  5. Step 5: Solve for x
    x = 4,626,375,295.28/75,978.20
  6. Step 6: Final answer
    x = 60,890.83

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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.