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Finding the Fourth Proportional to 18,805.44, 28,213.02 and 10,038

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Solution

The fourth proportional to 18,805.44, 28,213.02 and 10,038 is: 15,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.44 : 28,213.02 = 10,038 : x
  2. Step 2: Convert to fraction form
    18,805.44/28,213.02 = 10,038/x
  3. Step 3: Cross multiply
    18,805.44x = 28,213.02 × 10,038
  4. Step 4: Simplify right side
    18,805.44x = 283,202,294.76
  5. Step 5: Solve for x
    x = 283,202,294.76/18,805.44
  6. Step 6: Final answer
    x = 15,059.59

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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.