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Finding the Fourth Proportional to 19,512, 26,879.04 and 14,791.68

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Solution

The fourth proportional to 19,512, 26,879.04 and 14,791.68 is: 20,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,512 : 26,879.04 = 14,791.68 : x
  2. Step 2: Convert to fraction form
    19,512/26,879.04 = 14,791.68/x
  3. Step 3: Cross multiply
    19,512x = 26,879.04 × 14,791.68
  4. Step 4: Simplify right side
    19,512x = 397,586,158.39
  5. Step 5: Solve for x
    x = 397,586,158.39/19,512
  6. Step 6: Final answer
    x = 20,376.49

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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.