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Finding the Fourth Proportional to 14,553.38, 20,083.66 and 7,929.38

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Solution

The fourth proportional to 14,553.38, 20,083.66 and 7,929.38 is: 10,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,553.38 : 20,083.66 = 7,929.38 : x
  2. Step 2: Convert to fraction form
    14,553.38/20,083.66 = 7,929.38/x
  3. Step 3: Cross multiply
    14,553.38x = 20,083.66 × 7,929.38
  4. Step 4: Simplify right side
    14,553.38x = 159,250,851.69
  5. Step 5: Solve for x
    x = 159,250,851.69/14,553.38
  6. Step 6: Final answer
    x = 10,942.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.