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Finding the Fourth Proportional to 16,899.66, 25,353.81 and 7,663.50

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Solution

The fourth proportional to 16,899.66, 25,353.81 and 7,663.50 is: 11,497.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,899.66 : 25,353.81 = 7,663.50 : x
  2. Step 2: Convert to fraction form
    16,899.66/25,353.81 = 7,663.50/x
  3. Step 3: Cross multiply
    16,899.66x = 25,353.81 × 7,663.50
  4. Step 4: Simplify right side
    16,899.66x = 194,298,922.94
  5. Step 5: Solve for x
    x = 194,298,922.94/16,899.66
  6. Step 6: Final answer
    x = 11,497.21

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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.