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Finding the Fourth Proportional to 18,651.44, 25,720.76 and 11,934.62

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Solution

The fourth proportional to 18,651.44, 25,720.76 and 11,934.62 is: 16,458.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.44 : 25,720.76 = 11,934.62 : x
  2. Step 2: Convert to fraction form
    18,651.44/25,720.76 = 11,934.62/x
  3. Step 3: Cross multiply
    18,651.44x = 25,720.76 × 11,934.62
  4. Step 4: Simplify right side
    18,651.44x = 306,967,496.71
  5. Step 5: Solve for x
    x = 306,967,496.71/18,651.44
  6. Step 6: Final answer
    x = 16,458.11

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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.