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Finding the Fourth Proportional to 51,991.92, 71,683.74 and 43,390.44

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Solution

The fourth proportional to 51,991.92, 71,683.74 and 43,390.44 is: 59,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,991.92 : 71,683.74 = 43,390.44 : x
  2. Step 2: Convert to fraction form
    51,991.92/71,683.74 = 43,390.44/x
  3. Step 3: Cross multiply
    51,991.92x = 71,683.74 × 43,390.44
  4. Step 4: Simplify right side
    51,991.92x = 3,110,389,019.45
  5. Step 5: Solve for x
    x = 3,110,389,019.45/51,991.92
  6. Step 6: Final answer
    x = 59,824.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.