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Finding the Fourth Proportional to 13,619.67, 20,410.35 and 10,833.99

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Solution

The fourth proportional to 13,619.67, 20,410.35 and 10,833.99 is: 16,235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.67 : 20,410.35 = 10,833.99 : x
  2. Step 2: Convert to fraction form
    13,619.67/20,410.35 = 10,833.99/x
  3. Step 3: Cross multiply
    13,619.67x = 20,410.35 × 10,833.99
  4. Step 4: Simplify right side
    13,619.67x = 221,125,527.80
  5. Step 5: Solve for x
    x = 221,125,527.80/13,619.67
  6. Step 6: Final answer
    x = 16,235.75

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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.