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Finding the Fourth Proportional to 8,524.56, 12,789.40 and 2,681.22

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Solution

The fourth proportional to 8,524.56, 12,789.40 and 2,681.22 is: 4,022.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,524.56 : 12,789.40 = 2,681.22 : x
  2. Step 2: Convert to fraction form
    8,524.56/12,789.40 = 2,681.22/x
  3. Step 3: Cross multiply
    8,524.56x = 12,789.40 × 2,681.22
  4. Step 4: Simplify right side
    8,524.56x = 34,291,195.07
  5. Step 5: Solve for x
    x = 34,291,195.07/8,524.56
  6. Step 6: Final answer
    x = 4,022.64

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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.