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Finding the Fourth Proportional to 64,669.87, 89,247.33 and 36,375.55

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Solution

The fourth proportional to 64,669.87, 89,247.33 and 36,375.55 is: 50,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,669.87 : 89,247.33 = 36,375.55 : x
  2. Step 2: Convert to fraction form
    64,669.87/89,247.33 = 36,375.55/x
  3. Step 3: Cross multiply
    64,669.87x = 89,247.33 × 36,375.55
  4. Step 4: Simplify right side
    64,669.87x = 3,246,420,714.78
  5. Step 5: Solve for x
    x = 3,246,420,714.78/64,669.87
  6. Step 6: Final answer
    x = 50,199.90

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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.