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Finding the Fourth Proportional to 70,622.76, 105,964.92 and 26,239.62

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Solution

The fourth proportional to 70,622.76, 105,964.92 and 26,239.62 is: 39,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,622.76 : 105,964.92 = 26,239.62 : x
  2. Step 2: Convert to fraction form
    70,622.76/105,964.92 = 26,239.62/x
  3. Step 3: Cross multiply
    70,622.76x = 105,964.92 × 26,239.62
  4. Step 4: Simplify right side
    70,622.76x = 2,780,479,234.13
  5. Step 5: Solve for x
    x = 2,780,479,234.13/70,622.76
  6. Step 6: Final answer
    x = 39,370.87

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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.