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Finding the Fourth Proportional to 14,525.70, 20,056.74 and 11,163.20

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Solution

The fourth proportional to 14,525.70, 20,056.74 and 11,163.20 is: 15,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,525.70 : 20,056.74 = 11,163.20 : x
  2. Step 2: Convert to fraction form
    14,525.70/20,056.74 = 11,163.20/x
  3. Step 3: Cross multiply
    14,525.70x = 20,056.74 × 11,163.20
  4. Step 4: Simplify right side
    14,525.70x = 223,897,399.97
  5. Step 5: Solve for x
    x = 223,897,399.97/14,525.70
  6. Step 6: Final answer
    x = 15,413.88

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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.