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Finding the Fourth Proportional to 8,589.88, 11,855.29 and 4,813.30

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Solution

The fourth proportional to 8,589.88, 11,855.29 and 4,813.30 is: 6,643.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.88 : 11,855.29 = 4,813.30 : x
  2. Step 2: Convert to fraction form
    8,589.88/11,855.29 = 4,813.30/x
  3. Step 3: Cross multiply
    8,589.88x = 11,855.29 × 4,813.30
  4. Step 4: Simplify right side
    8,589.88x = 57,063,067.36
  5. Step 5: Solve for x
    x = 57,063,067.36/8,589.88
  6. Step 6: Final answer
    x = 6,643.06

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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.