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Finding the Fourth Proportional to 16,611.81, 24,921.93 and 5,518.56

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Solution

The fourth proportional to 16,611.81, 24,921.93 and 5,518.56 is: 8,279.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,611.81 : 24,921.93 = 5,518.56 : x
  2. Step 2: Convert to fraction form
    16,611.81/24,921.93 = 5,518.56/x
  3. Step 3: Cross multiply
    16,611.81x = 24,921.93 × 5,518.56
  4. Step 4: Simplify right side
    16,611.81x = 137,533,166.02
  5. Step 5: Solve for x
    x = 137,533,166.02/16,611.81
  6. Step 6: Final answer
    x = 8,279.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.