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Finding the Fourth Proportional to 14,015.69, 20,997.89 and 11,020.18

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Solution

The fourth proportional to 14,015.69, 20,997.89 and 11,020.18 is: 16,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,015.69 : 20,997.89 = 11,020.18 : x
  2. Step 2: Convert to fraction form
    14,015.69/20,997.89 = 11,020.18/x
  3. Step 3: Cross multiply
    14,015.69x = 20,997.89 × 11,020.18
  4. Step 4: Simplify right side
    14,015.69x = 231,400,527.42
  5. Step 5: Solve for x
    x = 231,400,527.42/14,015.69
  6. Step 6: Final answer
    x = 16,510.11

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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.