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Finding the Fourth Proportional to 18,845.36, 28,245.36 and 7,737.02

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Solution

The fourth proportional to 18,845.36, 28,245.36 and 7,737.02 is: 11,596.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845.36 : 28,245.36 = 7,737.02 : x
  2. Step 2: Convert to fraction form
    18,845.36/28,245.36 = 7,737.02/x
  3. Step 3: Cross multiply
    18,845.36x = 28,245.36 × 7,737.02
  4. Step 4: Simplify right side
    18,845.36x = 218,534,915.23
  5. Step 5: Solve for x
    x = 218,534,915.23/18,845.36
  6. Step 6: Final answer
    x = 11,596.22

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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.