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Finding the Fourth Proportional to 21,361.61, 32,049.27 and 10,269.11

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Solution

The fourth proportional to 21,361.61, 32,049.27 and 10,269.11 is: 15,406.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.61 : 32,049.27 = 10,269.11 : x
  2. Step 2: Convert to fraction form
    21,361.61/32,049.27 = 10,269.11/x
  3. Step 3: Cross multiply
    21,361.61x = 32,049.27 × 10,269.11
  4. Step 4: Simplify right side
    21,361.61x = 329,117,479.05
  5. Step 5: Solve for x
    x = 329,117,479.05/21,361.61
  6. Step 6: Final answer
    x = 15,406.96

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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.