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Finding the Fourth Proportional to 19,472.52, 26,872.06 and 10,640.52

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Solution

The fourth proportional to 19,472.52, 26,872.06 and 10,640.52 is: 14,683.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,472.52 : 26,872.06 = 10,640.52 : x
  2. Step 2: Convert to fraction form
    19,472.52/26,872.06 = 10,640.52/x
  3. Step 3: Cross multiply
    19,472.52x = 26,872.06 × 10,640.52
  4. Step 4: Simplify right side
    19,472.52x = 285,932,691.87
  5. Step 5: Solve for x
    x = 285,932,691.87/19,472.52
  6. Step 6: Final answer
    x = 14,683.91

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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.