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Finding the Fourth Proportional to 64,847.45, 89,487.66 and 36,167.98

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Solution

The fourth proportional to 64,847.45, 89,487.66 and 36,167.98 is: 49,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,847.45 : 89,487.66 = 36,167.98 : x
  2. Step 2: Convert to fraction form
    64,847.45/89,487.66 = 36,167.98/x
  3. Step 3: Cross multiply
    64,847.45x = 89,487.66 × 36,167.98
  4. Step 4: Simplify right side
    64,847.45x = 3,236,587,897.13
  5. Step 5: Solve for x
    x = 3,236,587,897.13/64,847.45
  6. Step 6: Final answer
    x = 49,910.80

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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.