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Finding the Fourth Proportional to 21,950.39, 32,896.87 and 8,811.98

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Solution

The fourth proportional to 21,950.39, 32,896.87 and 8,811.98 is: 13,206.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.39 : 32,896.87 = 8,811.98 : x
  2. Step 2: Convert to fraction form
    21,950.39/32,896.87 = 8,811.98/x
  3. Step 3: Cross multiply
    21,950.39x = 32,896.87 × 8,811.98
  4. Step 4: Simplify right side
    21,950.39x = 289,886,560.50
  5. Step 5: Solve for x
    x = 289,886,560.50/21,950.39
  6. Step 6: Final answer
    x = 13,206.44

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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.