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Finding the Fourth Proportional to 14,936.67, 20,611.47 and 8,563.20

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Solution

The fourth proportional to 14,936.67, 20,611.47 and 8,563.20 is: 11,816.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.67 : 20,611.47 = 8,563.20 : x
  2. Step 2: Convert to fraction form
    14,936.67/20,611.47 = 8,563.20/x
  3. Step 3: Cross multiply
    14,936.67x = 20,611.47 × 8,563.20
  4. Step 4: Simplify right side
    14,936.67x = 176,500,139.90
  5. Step 5: Solve for x
    x = 176,500,139.90/14,936.67
  6. Step 6: Final answer
    x = 11,816.57

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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.