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Finding the Fourth Proportional to 8,676.66, 11,975.67 and 5,655.57

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Solution

The fourth proportional to 8,676.66, 11,975.67 and 5,655.57 is: 7,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.66 : 11,975.67 = 5,655.57 : x
  2. Step 2: Convert to fraction form
    8,676.66/11,975.67 = 5,655.57/x
  3. Step 3: Cross multiply
    8,676.66x = 11,975.67 × 5,655.57
  4. Step 4: Simplify right side
    8,676.66x = 67,729,239.98
  5. Step 5: Solve for x
    x = 67,729,239.98/8,676.66
  6. Step 6: Final answer
    x = 7,805.91

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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.