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Finding the Fourth Proportional to 33,105.60, 49,664.80 and 16,689.60

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Solution

The fourth proportional to 33,105.60, 49,664.80 and 16,689.60 is: 25,037.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,105.60 : 49,664.80 = 16,689.60 : x
  2. Step 2: Convert to fraction form
    33,105.60/49,664.80 = 16,689.60/x
  3. Step 3: Cross multiply
    33,105.60x = 49,664.80 × 16,689.60
  4. Step 4: Simplify right side
    33,105.60x = 828,885,646.08
  5. Step 5: Solve for x
    x = 828,885,646.08/33,105.60
  6. Step 6: Final answer
    x = 25,037.63

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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.