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Finding the Fourth Proportional to 18,651.60, 28,001.16 and 16,035.84

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Solution

The fourth proportional to 18,651.60, 28,001.16 and 16,035.84 is: 24,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.60 : 28,001.16 = 16,035.84 : x
  2. Step 2: Convert to fraction form
    18,651.60/28,001.16 = 16,035.84/x
  3. Step 3: Cross multiply
    18,651.60x = 28,001.16 × 16,035.84
  4. Step 4: Simplify right side
    18,651.60x = 449,022,121.57
  5. Step 5: Solve for x
    x = 449,022,121.57/18,651.60
  6. Step 6: Final answer
    x = 24,074.19

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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.