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Finding the Fourth Proportional to 18,704.66, 28,063.73 and 11,580.60

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Solution

The fourth proportional to 18,704.66, 28,063.73 and 11,580.60 is: 17,375.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.66 : 28,063.73 = 11,580.60 : x
  2. Step 2: Convert to fraction form
    18,704.66/28,063.73 = 11,580.60/x
  3. Step 3: Cross multiply
    18,704.66x = 28,063.73 × 11,580.60
  4. Step 4: Simplify right side
    18,704.66x = 324,994,965.83
  5. Step 5: Solve for x
    x = 324,994,965.83/18,704.66
  6. Step 6: Final answer
    x = 17,375.08

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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.