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Finding the Fourth Proportional to 19,171.68, 28,764.84 and 7,493.04

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Solution

The fourth proportional to 19,171.68, 28,764.84 and 7,493.04 is: 11,242.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.68 : 28,764.84 = 7,493.04 : x
  2. Step 2: Convert to fraction form
    19,171.68/28,764.84 = 7,493.04/x
  3. Step 3: Cross multiply
    19,171.68x = 28,764.84 × 7,493.04
  4. Step 4: Simplify right side
    19,171.68x = 215,536,096.71
  5. Step 5: Solve for x
    x = 215,536,096.71/19,171.68
  6. Step 6: Final answer
    x = 11,242.42

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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.