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Finding the Fourth Proportional to 18,659.14, 25,749.01 and 10,161.02

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Solution

The fourth proportional to 18,659.14, 25,749.01 and 10,161.02 is: 14,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.14 : 25,749.01 = 10,161.02 : x
  2. Step 2: Convert to fraction form
    18,659.14/25,749.01 = 10,161.02/x
  3. Step 3: Cross multiply
    18,659.14x = 25,749.01 × 10,161.02
  4. Step 4: Simplify right side
    18,659.14x = 261,636,205.59
  5. Step 5: Solve for x
    x = 261,636,205.59/18,659.14
  6. Step 6: Final answer
    x = 14,021.88

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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.