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Finding the Fourth Proportional to 18,694.60, 25,798.82 and 10,311.08

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Solution

The fourth proportional to 18,694.60, 25,798.82 and 10,311.08 is: 14,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.60 : 25,798.82 = 10,311.08 : x
  2. Step 2: Convert to fraction form
    18,694.60/25,798.82 = 10,311.08/x
  3. Step 3: Cross multiply
    18,694.60x = 25,798.82 × 10,311.08
  4. Step 4: Simplify right side
    18,694.60x = 266,013,696.93
  5. Step 5: Solve for x
    x = 266,013,696.93/18,694.60
  6. Step 6: Final answer
    x = 14,229.44

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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.