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Finding the Fourth Proportional to 64,744.38, 89,361 and 43,511.33

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Solution

The fourth proportional to 64,744.38, 89,361 and 43,511.33 is: 60,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,744.38 : 89,361 = 43,511.33 : x
  2. Step 2: Convert to fraction form
    64,744.38/89,361 = 43,511.33/x
  3. Step 3: Cross multiply
    64,744.38x = 89,361 × 43,511.33
  4. Step 4: Simplify right side
    64,744.38x = 3,888,216,183.53
  5. Step 5: Solve for x
    x = 3,888,216,183.53/64,744.38
  6. Step 6: Final answer
    x = 60,054.88

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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.