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Finding the Fourth Proportional to 14,866.14, 20,515.86 and 8,493.78

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Solution

The fourth proportional to 14,866.14, 20,515.86 and 8,493.78 is: 11,721.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,866.14 : 20,515.86 = 8,493.78 : x
  2. Step 2: Convert to fraction form
    14,866.14/20,515.86 = 8,493.78/x
  3. Step 3: Cross multiply
    14,866.14x = 20,515.86 × 8,493.78
  4. Step 4: Simplify right side
    14,866.14x = 174,257,201.35
  5. Step 5: Solve for x
    x = 174,257,201.35/14,866.14
  6. Step 6: Final answer
    x = 11,721.75

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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.