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Finding the Fourth Proportional to 10,611.02, 15,916.13 and 3,591.56

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Solution

The fourth proportional to 10,611.02, 15,916.13 and 3,591.56 is: 5,387.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.02 : 15,916.13 = 3,591.56 : x
  2. Step 2: Convert to fraction form
    10,611.02/15,916.13 = 3,591.56/x
  3. Step 3: Cross multiply
    10,611.02x = 15,916.13 × 3,591.56
  4. Step 4: Simplify right side
    10,611.02x = 57,163,771.16
  5. Step 5: Solve for x
    x = 57,163,771.16/10,611.02
  6. Step 6: Final answer
    x = 5,387.21

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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.