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Finding the Fourth Proportional to 21,891.03, 32,841.74 and 7,099.95

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Solution

The fourth proportional to 21,891.03, 32,841.74 and 7,099.95 is: 10,651.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.03 : 32,841.74 = 7,099.95 : x
  2. Step 2: Convert to fraction form
    21,891.03/32,841.74 = 7,099.95/x
  3. Step 3: Cross multiply
    21,891.03x = 32,841.74 × 7,099.95
  4. Step 4: Simplify right side
    21,891.03x = 233,174,711.91
  5. Step 5: Solve for x
    x = 233,174,711.91/21,891.03
  6. Step 6: Final answer
    x = 10,651.61

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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.