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Finding the Fourth Proportional to 18,496.60, 27,744.90 and 14,122.60

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Solution

The fourth proportional to 18,496.60, 27,744.90 and 14,122.60 is: 21,183.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,496.60 : 27,744.90 = 14,122.60 : x
  2. Step 2: Convert to fraction form
    18,496.60/27,744.90 = 14,122.60/x
  3. Step 3: Cross multiply
    18,496.60x = 27,744.90 × 14,122.60
  4. Step 4: Simplify right side
    18,496.60x = 391,830,124.74
  5. Step 5: Solve for x
    x = 391,830,124.74/18,496.60
  6. Step 6: Final answer
    x = 21,183.90

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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.