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Finding the Fourth Proportional to 44,517.98, 66,780.44 and 12,928.56

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Solution

The fourth proportional to 44,517.98, 66,780.44 and 12,928.56 is: 19,393.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,517.98 : 66,780.44 = 12,928.56 : x
  2. Step 2: Convert to fraction form
    44,517.98/66,780.44 = 12,928.56/x
  3. Step 3: Cross multiply
    44,517.98x = 66,780.44 × 12,928.56
  4. Step 4: Simplify right side
    44,517.98x = 863,374,658.78
  5. Step 5: Solve for x
    x = 863,374,658.78/44,517.98
  6. Step 6: Final answer
    x = 19,393.84

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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.