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Finding the Fourth Proportional to 8,622.44, 11,871.69 and 7,834.13

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Solution

The fourth proportional to 8,622.44, 11,871.69 and 7,834.13 is: 10,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.44 : 11,871.69 = 7,834.13 : x
  2. Step 2: Convert to fraction form
    8,622.44/11,871.69 = 7,834.13/x
  3. Step 3: Cross multiply
    8,622.44x = 11,871.69 × 7,834.13
  4. Step 4: Simplify right side
    8,622.44x = 93,004,318.56
  5. Step 5: Solve for x
    x = 93,004,318.56/8,622.44
  6. Step 6: Final answer
    x = 10,786.31

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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.