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Finding the Fourth Proportional to 18,696.43, 28,044.28 and 4,845.07

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Solution

The fourth proportional to 18,696.43, 28,044.28 and 4,845.07 is: 7,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.43 : 28,044.28 = 4,845.07 : x
  2. Step 2: Convert to fraction form
    18,696.43/28,044.28 = 4,845.07/x
  3. Step 3: Cross multiply
    18,696.43x = 28,044.28 × 4,845.07
  4. Step 4: Simplify right side
    18,696.43x = 135,876,499.70
  5. Step 5: Solve for x
    x = 135,876,499.70/18,696.43
  6. Step 6: Final answer
    x = 7,267.51

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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.