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Finding the Fourth Proportional to 11,074.50, 16,611.75 and 4,918.50

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Solution

The fourth proportional to 11,074.50, 16,611.75 and 4,918.50 is: 7,377.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,074.50 : 16,611.75 = 4,918.50 : x
  2. Step 2: Convert to fraction form
    11,074.50/16,611.75 = 4,918.50/x
  3. Step 3: Cross multiply
    11,074.50x = 16,611.75 × 4,918.50
  4. Step 4: Simplify right side
    11,074.50x = 81,704,892.38
  5. Step 5: Solve for x
    x = 81,704,892.38/11,074.50
  6. Step 6: Final answer
    x = 7,377.75

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.