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Finding the Fourth Proportional to 21,611.81, 32,384.88 and 16,039.05

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Solution

The fourth proportional to 21,611.81, 32,384.88 and 16,039.05 is: 24,034.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.81 : 32,384.88 = 16,039.05 : x
  2. Step 2: Convert to fraction form
    21,611.81/32,384.88 = 16,039.05/x
  3. Step 3: Cross multiply
    21,611.81x = 32,384.88 × 16,039.05
  4. Step 4: Simplify right side
    21,611.81x = 519,422,709.56
  5. Step 5: Solve for x
    x = 519,422,709.56/21,611.81
  6. Step 6: Final answer
    x = 24,034.21

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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.