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Finding the Fourth Proportional to 18,101.94, 27,136.08 and 7,015.86

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Solution

The fourth proportional to 18,101.94, 27,136.08 and 7,015.86 is: 10,517.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.94 : 27,136.08 = 7,015.86 : x
  2. Step 2: Convert to fraction form
    18,101.94/27,136.08 = 7,015.86/x
  3. Step 3: Cross multiply
    18,101.94x = 27,136.08 × 7,015.86
  4. Step 4: Simplify right side
    18,101.94x = 190,382,938.23
  5. Step 5: Solve for x
    x = 190,382,938.23/18,101.94
  6. Step 6: Final answer
    x = 10,517.27

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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.