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Finding the Fourth Proportional to 18,674.86, 25,771.04 and 10,716.92

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Solution

The fourth proportional to 18,674.86, 25,771.04 and 10,716.92 is: 14,789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.86 : 25,771.04 = 10,716.92 : x
  2. Step 2: Convert to fraction form
    18,674.86/25,771.04 = 10,716.92/x
  3. Step 3: Cross multiply
    18,674.86x = 25,771.04 × 10,716.92
  4. Step 4: Simplify right side
    18,674.86x = 276,186,174.00
  5. Step 5: Solve for x
    x = 276,186,174.00/18,674.86
  6. Step 6: Final answer
    x = 14,789.20

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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.