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Finding the Fourth Proportional to 18,634.92, 25,719.84 and 10,682.49

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Solution

The fourth proportional to 18,634.92, 25,719.84 and 10,682.49 is: 14,743.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.92 : 25,719.84 = 10,682.49 : x
  2. Step 2: Convert to fraction form
    18,634.92/25,719.84 = 10,682.49/x
  3. Step 3: Cross multiply
    18,634.92x = 25,719.84 × 10,682.49
  4. Step 4: Simplify right side
    18,634.92x = 274,751,933.60
  5. Step 5: Solve for x
    x = 274,751,933.60/18,634.92
  6. Step 6: Final answer
    x = 14,743.93

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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.