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Finding the Fourth Proportional to 14,647.62, 21,969.14 and 4,786.82

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Solution

The fourth proportional to 14,647.62, 21,969.14 and 4,786.82 is: 7,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,647.62 : 21,969.14 = 4,786.82 : x
  2. Step 2: Convert to fraction form
    14,647.62/21,969.14 = 4,786.82/x
  3. Step 3: Cross multiply
    14,647.62x = 21,969.14 × 4,786.82
  4. Step 4: Simplify right side
    14,647.62x = 105,162,318.73
  5. Step 5: Solve for x
    x = 105,162,318.73/14,647.62
  6. Step 6: Final answer
    x = 7,179.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.