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Finding the Fourth Proportional to 64,575.72, 89,121.96 and 37,724.94

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Solution

The fourth proportional to 64,575.72, 89,121.96 and 37,724.94 is: 52,064.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,575.72 : 89,121.96 = 37,724.94 : x
  2. Step 2: Convert to fraction form
    64,575.72/89,121.96 = 37,724.94/x
  3. Step 3: Cross multiply
    64,575.72x = 89,121.96 × 37,724.94
  4. Step 4: Simplify right side
    64,575.72x = 3,362,120,593.68
  5. Step 5: Solve for x
    x = 3,362,120,593.68/64,575.72
  6. Step 6: Final answer
    x = 52,064.78

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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.