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Finding the Fourth Proportional to 17,824.80, 26,737.20 and 7,435.20

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Solution

The fourth proportional to 17,824.80, 26,737.20 and 7,435.20 is: 11,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,824.80 : 26,737.20 = 7,435.20 : x
  2. Step 2: Convert to fraction form
    17,824.80/26,737.20 = 7,435.20/x
  3. Step 3: Cross multiply
    17,824.80x = 26,737.20 × 7,435.20
  4. Step 4: Simplify right side
    17,824.80x = 198,796,429.44
  5. Step 5: Solve for x
    x = 198,796,429.44/17,824.80
  6. Step 6: Final answer
    x = 11,152.80

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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.