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Finding the Fourth Proportional to 18,667.26, 25,760.80 and 10,709.14

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Solution

The fourth proportional to 18,667.26, 25,760.80 and 10,709.14 is: 14,778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.26 : 25,760.80 = 10,709.14 : x
  2. Step 2: Convert to fraction form
    18,667.26/25,760.80 = 10,709.14/x
  3. Step 3: Cross multiply
    18,667.26x = 25,760.80 × 10,709.14
  4. Step 4: Simplify right side
    18,667.26x = 275,876,013.71
  5. Step 5: Solve for x
    x = 275,876,013.71/18,667.26
  6. Step 6: Final answer
    x = 14,778.60

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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.