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Finding the Fourth Proportional to 19,960.74, 29,946.24 and 7,480.94

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Solution

The fourth proportional to 19,960.74, 29,946.24 and 7,480.94 is: 11,223.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960.74 : 29,946.24 = 7,480.94 : x
  2. Step 2: Convert to fraction form
    19,960.74/29,946.24 = 7,480.94/x
  3. Step 3: Cross multiply
    19,960.74x = 29,946.24 × 7,480.94
  4. Step 4: Simplify right side
    19,960.74x = 224,025,874.93
  5. Step 5: Solve for x
    x = 224,025,874.93/19,960.74
  6. Step 6: Final answer
    x = 11,223.33

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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.