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Finding the Fourth Proportional to 10,991.58, 16,488.99 and 3,201

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Solution

The fourth proportional to 10,991.58, 16,488.99 and 3,201 is: 4,801.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.58 : 16,488.99 = 3,201 : x
  2. Step 2: Convert to fraction form
    10,991.58/16,488.99 = 3,201/x
  3. Step 3: Cross multiply
    10,991.58x = 16,488.99 × 3,201
  4. Step 4: Simplify right side
    10,991.58x = 52,781,256.99
  5. Step 5: Solve for x
    x = 52,781,256.99/10,991.58
  6. Step 6: Final answer
    x = 4,801.97

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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.