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Finding the Fourth Proportional to 18,651.16, 25,737.98 and 11,095.76

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Solution

The fourth proportional to 18,651.16, 25,737.98 and 11,095.76 is: 15,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.16 : 25,737.98 = 11,095.76 : x
  2. Step 2: Convert to fraction form
    18,651.16/25,737.98 = 11,095.76/x
  3. Step 3: Cross multiply
    18,651.16x = 25,737.98 × 11,095.76
  4. Step 4: Simplify right side
    18,651.16x = 285,582,416.65
  5. Step 5: Solve for x
    x = 285,582,416.65/18,651.16
  6. Step 6: Final answer
    x = 15,311.78

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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.