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Finding the Fourth Proportional to 57,172.60, 85,845.30 and 44,039.80

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Solution

The fourth proportional to 57,172.60, 85,845.30 and 44,039.80 is: 66,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,172.60 : 85,845.30 = 44,039.80 : x
  2. Step 2: Convert to fraction form
    57,172.60/85,845.30 = 44,039.80/x
  3. Step 3: Cross multiply
    57,172.60x = 85,845.30 × 44,039.80
  4. Step 4: Simplify right side
    57,172.60x = 3,780,609,842.94
  5. Step 5: Solve for x
    x = 3,780,609,842.94/57,172.60
  6. Step 6: Final answer
    x = 66,126.25

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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.