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Finding the Fourth Proportional to 18,674.92, 25,771.92 and 10,718.56

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Solution

The fourth proportional to 18,674.92, 25,771.92 and 10,718.56 is: 14,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.92 : 25,771.92 = 10,718.56 : x
  2. Step 2: Convert to fraction form
    18,674.92/25,771.92 = 10,718.56/x
  3. Step 3: Cross multiply
    18,674.92x = 25,771.92 × 10,718.56
  4. Step 4: Simplify right side
    18,674.92x = 276,237,870.84
  5. Step 5: Solve for x
    x = 276,237,870.84/18,674.92
  6. Step 6: Final answer
    x = 14,791.92

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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.