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Finding the Fourth Proportional to 44,193.56, 66,314.64 and 20,819.40

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Solution

The fourth proportional to 44,193.56, 66,314.64 and 20,819.40 is: 31,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,193.56 : 66,314.64 = 20,819.40 : x
  2. Step 2: Convert to fraction form
    44,193.56/66,314.64 = 20,819.40/x
  3. Step 3: Cross multiply
    44,193.56x = 66,314.64 × 20,819.40
  4. Step 4: Simplify right side
    44,193.56x = 1,380,631,016.02
  5. Step 5: Solve for x
    x = 1,380,631,016.02/44,193.56
  6. Step 6: Final answer
    x = 31,240.55

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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.