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Finding the Fourth Proportional to 18,588.60, 27,882.96 and 4,737.60

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Solution

The fourth proportional to 18,588.60, 27,882.96 and 4,737.60 is: 7,106.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.60 : 27,882.96 = 4,737.60 : x
  2. Step 2: Convert to fraction form
    18,588.60/27,882.96 = 4,737.60/x
  3. Step 3: Cross multiply
    18,588.60x = 27,882.96 × 4,737.60
  4. Step 4: Simplify right side
    18,588.60x = 132,098,311.30
  5. Step 5: Solve for x
    x = 132,098,311.30/18,588.60
  6. Step 6: Final answer
    x = 7,106.42

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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.