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Finding the Fourth Proportional to 19,671.68, 29,481.24 and 7,179.96

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Solution

The fourth proportional to 19,671.68, 29,481.24 and 7,179.96 is: 10,760.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.68 : 29,481.24 = 7,179.96 : x
  2. Step 2: Convert to fraction form
    19,671.68/29,481.24 = 7,179.96/x
  3. Step 3: Cross multiply
    19,671.68x = 29,481.24 × 7,179.96
  4. Step 4: Simplify right side
    19,671.68x = 211,674,123.95
  5. Step 5: Solve for x
    x = 211,674,123.95/19,671.68
  6. Step 6: Final answer
    x = 10,760.35

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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.