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Finding the Fourth Proportional to 18,591.30, 27,886.98 and 7,914.90

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Solution

The fourth proportional to 18,591.30, 27,886.98 and 7,914.90 is: 11,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.30 : 27,886.98 = 7,914.90 : x
  2. Step 2: Convert to fraction form
    18,591.30/27,886.98 = 7,914.90/x
  3. Step 3: Cross multiply
    18,591.30x = 27,886.98 × 7,914.90
  4. Step 4: Simplify right side
    18,591.30x = 220,722,658.00
  5. Step 5: Solve for x
    x = 220,722,658.00/18,591.30
  6. Step 6: Final answer
    x = 11,872.36

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1.5x scale

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.