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Finding the Fourth Proportional to 64,874.48, 89,529.90 and 36,579.56

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Solution

The fourth proportional to 64,874.48, 89,529.90 and 36,579.56 is: 50,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,874.48 : 89,529.90 = 36,579.56 : x
  2. Step 2: Convert to fraction form
    64,874.48/89,529.90 = 36,579.56/x
  3. Step 3: Cross multiply
    64,874.48x = 89,529.90 × 36,579.56
  4. Step 4: Simplify right side
    64,874.48x = 3,274,964,348.84
  5. Step 5: Solve for x
    x = 3,274,964,348.84/64,874.48
  6. Step 6: Final answer
    x = 50,481.55

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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.