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Finding the Fourth Proportional to 10,991.53, 16,487.14 and 2,671.52

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Solution

The fourth proportional to 10,991.53, 16,487.14 and 2,671.52 is: 4,007.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.53 : 16,487.14 = 2,671.52 : x
  2. Step 2: Convert to fraction form
    10,991.53/16,487.14 = 2,671.52/x
  3. Step 3: Cross multiply
    10,991.53x = 16,487.14 × 2,671.52
  4. Step 4: Simplify right side
    10,991.53x = 44,045,671.06
  5. Step 5: Solve for x
    x = 44,045,671.06/10,991.53
  6. Step 6: Final answer
    x = 4,007.24

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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.