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Finding the Fourth Proportional to 71,693.86, 107,489.58 and 33,721.88

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Solution

The fourth proportional to 71,693.86, 107,489.58 and 33,721.88 is: 50,558.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,693.86 : 107,489.58 = 33,721.88 : x
  2. Step 2: Convert to fraction form
    71,693.86/107,489.58 = 33,721.88/x
  3. Step 3: Cross multiply
    71,693.86x = 107,489.58 × 33,721.88
  4. Step 4: Simplify right side
    71,693.86x = 3,624,750,718.01
  5. Step 5: Solve for x
    x = 3,624,750,718.01/71,693.86
  6. Step 6: Final answer
    x = 50,558.73

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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.