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Finding the Fourth Proportional to 19,672.72, 29,507.16 and 5,821.84

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Solution

The fourth proportional to 19,672.72, 29,507.16 and 5,821.84 is: 8,732.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.72 : 29,507.16 = 5,821.84 : x
  2. Step 2: Convert to fraction form
    19,672.72/29,507.16 = 5,821.84/x
  3. Step 3: Cross multiply
    19,672.72x = 29,507.16 × 5,821.84
  4. Step 4: Simplify right side
    19,672.72x = 171,785,964.37
  5. Step 5: Solve for x
    x = 171,785,964.37/19,672.72
  6. Step 6: Final answer
    x = 8,732.19

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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.