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Finding the Fourth Proportional to 16,639.90, 24,953.03 and 8,309.99

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Solution

The fourth proportional to 16,639.90, 24,953.03 and 8,309.99 is: 12,461.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,639.90 : 24,953.03 = 8,309.99 : x
  2. Step 2: Convert to fraction form
    16,639.90/24,953.03 = 8,309.99/x
  3. Step 3: Cross multiply
    16,639.90x = 24,953.03 × 8,309.99
  4. Step 4: Simplify right side
    16,639.90x = 207,359,481.76
  5. Step 5: Solve for x
    x = 207,359,481.76/16,639.90
  6. Step 6: Final answer
    x = 12,461.58

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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.