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Finding the Fourth Proportional to 71,579.69, 107,320.92 and 33,615.80

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Solution

The fourth proportional to 71,579.69, 107,320.92 and 33,615.80 is: 50,400.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,579.69 : 107,320.92 = 33,615.80 : x
  2. Step 2: Convert to fraction form
    71,579.69/107,320.92 = 33,615.80/x
  3. Step 3: Cross multiply
    71,579.69x = 107,320.92 × 33,615.80
  4. Step 4: Simplify right side
    71,579.69x = 3,607,678,045.93
  5. Step 5: Solve for x
    x = 3,607,678,045.93/71,579.69
  6. Step 6: Final answer
    x = 50,400.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.