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Finding the Fourth Proportional to 64,669.85, 89,243.48 and 36,375.47

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Solution

The fourth proportional to 64,669.85, 89,243.48 and 36,375.47 is: 50,197.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,669.85 : 89,243.48 = 36,375.47 : x
  2. Step 2: Convert to fraction form
    64,669.85/89,243.48 = 36,375.47/x
  3. Step 3: Cross multiply
    64,669.85x = 89,243.48 × 36,375.47
  4. Step 4: Simplify right side
    64,669.85x = 3,246,273,236.00
  5. Step 5: Solve for x
    x = 3,246,273,236.00/64,669.85
  6. Step 6: Final answer
    x = 50,197.63

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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.