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Finding the Fourth Proportional to 70,967.91, 106,449.56 and 28,835.54

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Solution

The fourth proportional to 70,967.91, 106,449.56 and 28,835.54 is: 43,252.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,967.91 : 106,449.56 = 28,835.54 : x
  2. Step 2: Convert to fraction form
    70,967.91/106,449.56 = 28,835.54/x
  3. Step 3: Cross multiply
    70,967.91x = 106,449.56 × 28,835.54
  4. Step 4: Simplify right side
    70,967.91x = 3,069,530,545.36
  5. Step 5: Solve for x
    x = 3,069,530,545.36/70,967.91
  6. Step 6: Final answer
    x = 43,252.37

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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.