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Finding the Fourth Proportional to 14,413.44, 19,889.78 and 8,125.41

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Solution

The fourth proportional to 14,413.44, 19,889.78 and 8,125.41 is: 11,212.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,413.44 : 19,889.78 = 8,125.41 : x
  2. Step 2: Convert to fraction form
    14,413.44/19,889.78 = 8,125.41/x
  3. Step 3: Cross multiply
    14,413.44x = 19,889.78 × 8,125.41
  4. Step 4: Simplify right side
    14,413.44x = 161,612,576.68
  5. Step 5: Solve for x
    x = 161,612,576.68/14,413.44
  6. Step 6: Final answer
    x = 11,212.63

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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.