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Finding the Fourth Proportional to 18,596.40, 25,662.30 and 11,522.70

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Solution

The fourth proportional to 18,596.40, 25,662.30 and 11,522.70 is: 15,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,596.40 : 25,662.30 = 11,522.70 : x
  2. Step 2: Convert to fraction form
    18,596.40/25,662.30 = 11,522.70/x
  3. Step 3: Cross multiply
    18,596.40x = 25,662.30 × 11,522.70
  4. Step 4: Simplify right side
    18,596.40x = 295,698,984.21
  5. Step 5: Solve for x
    x = 295,698,984.21/18,596.40
  6. Step 6: Final answer
    x = 15,900.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.