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Finding the Fourth Proportional to 12,591.62, 18,871.63 and 11,027.91

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Solution

The fourth proportional to 12,591.62, 18,871.63 and 11,027.91 is: 16,528.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.62 : 18,871.63 = 11,027.91 : x
  2. Step 2: Convert to fraction form
    12,591.62/18,871.63 = 11,027.91/x
  3. Step 3: Cross multiply
    12,591.62x = 18,871.63 × 11,027.91
  4. Step 4: Simplify right side
    12,591.62x = 208,114,637.19
  5. Step 5: Solve for x
    x = 208,114,637.19/12,591.62
  6. Step 6: Final answer
    x = 16,528.03

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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.