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Finding the Fourth Proportional to 19,447.52, 26,838.11 and 11,893.71

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Solution

The fourth proportional to 19,447.52, 26,838.11 and 11,893.71 is: 16,413.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,447.52 : 26,838.11 = 11,893.71 : x
  2. Step 2: Convert to fraction form
    19,447.52/26,838.11 = 11,893.71/x
  3. Step 3: Cross multiply
    19,447.52x = 26,838.11 × 11,893.71
  4. Step 4: Simplify right side
    19,447.52x = 319,204,718.73
  5. Step 5: Solve for x
    x = 319,204,718.73/19,447.52
  6. Step 6: Final answer
    x = 16,413.65

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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.