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Finding the Fourth Proportional to 43,202.91, 64,802.21 and 16,912.47

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Solution

The fourth proportional to 43,202.91, 64,802.21 and 16,912.47 is: 25,367.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,202.91 : 64,802.21 = 16,912.47 : x
  2. Step 2: Convert to fraction form
    43,202.91/64,802.21 = 16,912.47/x
  3. Step 3: Cross multiply
    43,202.91x = 64,802.21 × 16,912.47
  4. Step 4: Simplify right side
    43,202.91x = 1,095,965,348.00
  5. Step 5: Solve for x
    x = 1,095,965,348.00/43,202.91
  6. Step 6: Final answer
    x = 25,367.86

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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.