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Finding the Fourth Proportional to 64,910.20, 97,211.70 and 44,020.60

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Solution

The fourth proportional to 64,910.20, 97,211.70 and 44,020.60 is: 65,926.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,910.20 : 97,211.70 = 44,020.60 : x
  2. Step 2: Convert to fraction form
    64,910.20/97,211.70 = 44,020.60/x
  3. Step 3: Cross multiply
    64,910.20x = 97,211.70 × 44,020.60
  4. Step 4: Simplify right side
    64,910.20x = 4,279,317,361.02
  5. Step 5: Solve for x
    x = 4,279,317,361.02/64,910.20
  6. Step 6: Final answer
    x = 65,926.73

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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.