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Finding the Fourth Proportional to 18,795.24, 28,179.52 and 9,428.52

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Solution

The fourth proportional to 18,795.24, 28,179.52 and 9,428.52 is: 14,136.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.24 : 28,179.52 = 9,428.52 : x
  2. Step 2: Convert to fraction form
    18,795.24/28,179.52 = 9,428.52/x
  3. Step 3: Cross multiply
    18,795.24x = 28,179.52 × 9,428.52
  4. Step 4: Simplify right side
    18,795.24x = 265,691,167.91
  5. Step 5: Solve for x
    x = 265,691,167.91/18,795.24
  6. Step 6: Final answer
    x = 14,136.09

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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.