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Finding the Fourth Proportional to 16,611.32, 24,912.74 and 4,921.81

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Solution

The fourth proportional to 16,611.32, 24,912.74 and 4,921.81 is: 7,381.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,611.32 : 24,912.74 = 4,921.81 : x
  2. Step 2: Convert to fraction form
    16,611.32/24,912.74 = 4,921.81/x
  3. Step 3: Cross multiply
    16,611.32x = 24,912.74 × 4,921.81
  4. Step 4: Simplify right side
    16,611.32x = 122,615,623.69
  5. Step 5: Solve for x
    x = 122,615,623.69/16,611.32
  6. Step 6: Final answer
    x = 7,381.45

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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.