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Finding the Fourth Proportional to 8,611.02, 12,908.61 and 3,349.53

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Solution

The fourth proportional to 8,611.02, 12,908.61 and 3,349.53 is: 5,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.02 : 12,908.61 = 3,349.53 : x
  2. Step 2: Convert to fraction form
    8,611.02/12,908.61 = 3,349.53/x
  3. Step 3: Cross multiply
    8,611.02x = 12,908.61 × 3,349.53
  4. Step 4: Simplify right side
    8,611.02x = 43,237,776.45
  5. Step 5: Solve for x
    x = 43,237,776.45/8,611.02
  6. Step 6: Final answer
    x = 5,021.21

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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.