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Finding the Fourth Proportional to 19,769.73, 29,664.65 and 8,673.54

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Solution

The fourth proportional to 19,769.73, 29,664.65 and 8,673.54 is: 13,014.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,769.73 : 29,664.65 = 8,673.54 : x
  2. Step 2: Convert to fraction form
    19,769.73/29,664.65 = 8,673.54/x
  3. Step 3: Cross multiply
    19,769.73x = 29,664.65 × 8,673.54
  4. Step 4: Simplify right side
    19,769.73x = 257,297,528.36
  5. Step 5: Solve for x
    x = 257,297,528.36/19,769.73
  6. Step 6: Final answer
    x = 13,014.72

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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.