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Finding the Fourth Proportional to 19,812.38, 29,697.62 and 7,324.38

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Solution

The fourth proportional to 19,812.38, 29,697.62 and 7,324.38 is: 10,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.38 : 29,697.62 = 7,324.38 : x
  2. Step 2: Convert to fraction form
    19,812.38/29,697.62 = 7,324.38/x
  3. Step 3: Cross multiply
    19,812.38x = 29,697.62 × 7,324.38
  4. Step 4: Simplify right side
    19,812.38x = 217,516,617.35
  5. Step 5: Solve for x
    x = 217,516,617.35/19,812.38
  6. Step 6: Final answer
    x = 10,978.83

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1.5x scale

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.