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Finding the Fourth Proportional to 64,646.44, 89,212.62 and 36,351.88

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Solution

The fourth proportional to 64,646.44, 89,212.62 and 36,351.88 is: 50,165.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,646.44 : 89,212.62 = 36,351.88 : x
  2. Step 2: Convert to fraction form
    64,646.44/89,212.62 = 36,351.88/x
  3. Step 3: Cross multiply
    64,646.44x = 89,212.62 × 36,351.88
  4. Step 4: Simplify right side
    64,646.44x = 3,243,046,456.73
  5. Step 5: Solve for x
    x = 3,243,046,456.73/64,646.44
  6. Step 6: Final answer
    x = 50,165.89

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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.