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Finding the Fourth Proportional to 16,618.74, 24,927.99 and 7,129.65

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Solution

The fourth proportional to 16,618.74, 24,927.99 and 7,129.65 is: 10,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,618.74 : 24,927.99 = 7,129.65 : x
  2. Step 2: Convert to fraction form
    16,618.74/24,927.99 = 7,129.65/x
  3. Step 3: Cross multiply
    16,618.74x = 24,927.99 × 7,129.65
  4. Step 4: Simplify right side
    16,618.74x = 177,727,843.90
  5. Step 5: Solve for x
    x = 177,727,843.90/16,618.74
  6. Step 6: Final answer
    x = 10,694.42

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1.5x scale

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.