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Finding the Fourth Proportional to 16,589.78, 22,893.62 and 9,515.78

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Solution

The fourth proportional to 16,589.78, 22,893.62 and 9,515.78 is: 13,131.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,589.78 : 22,893.62 = 9,515.78 : x
  2. Step 2: Convert to fraction form
    16,589.78/22,893.62 = 9,515.78/x
  3. Step 3: Cross multiply
    16,589.78x = 22,893.62 × 9,515.78
  4. Step 4: Simplify right side
    16,589.78x = 217,850,651.32
  5. Step 5: Solve for x
    x = 217,850,651.32/16,589.78
  6. Step 6: Final answer
    x = 13,131.62

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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.