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Finding the Fourth Proportional to 43,221.68, 64,845.96 and 36,695.60

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Solution

The fourth proportional to 43,221.68, 64,845.96 and 36,695.60 is: 55,054.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,221.68 : 64,845.96 = 36,695.60 : x
  2. Step 2: Convert to fraction form
    43,221.68/64,845.96 = 36,695.60/x
  3. Step 3: Cross multiply
    43,221.68x = 64,845.96 × 36,695.60
  4. Step 4: Simplify right side
    43,221.68x = 2,379,561,409.78
  5. Step 5: Solve for x
    x = 2,379,561,409.78/43,221.68
  6. Step 6: Final answer
    x = 55,054.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.