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Finding the Fourth Proportional to 19,863.99, 27,414.21 and 11,364.42

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Solution

The fourth proportional to 19,863.99, 27,414.21 and 11,364.42 is: 15,683.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.99 : 27,414.21 = 11,364.42 : x
  2. Step 2: Convert to fraction form
    19,863.99/27,414.21 = 11,364.42/x
  3. Step 3: Cross multiply
    19,863.99x = 27,414.21 × 11,364.42
  4. Step 4: Simplify right side
    19,863.99x = 311,546,596.41
  5. Step 5: Solve for x
    x = 311,546,596.41/19,863.99
  6. Step 6: Final answer
    x = 15,683.99

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Half scale
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Double scale
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Similar ratio
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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.