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Finding the Fourth Proportional to 18,696.53, 28,050.08 and 7,611.17

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Solution

The fourth proportional to 18,696.53, 28,050.08 and 7,611.17 is: 11,418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.53 : 28,050.08 = 7,611.17 : x
  2. Step 2: Convert to fraction form
    18,696.53/28,050.08 = 7,611.17/x
  3. Step 3: Cross multiply
    18,696.53x = 28,050.08 × 7,611.17
  4. Step 4: Simplify right side
    18,696.53x = 213,493,749.09
  5. Step 5: Solve for x
    x = 213,493,749.09/18,696.53
  6. Step 6: Final answer
    x = 11,418.90

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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.