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Finding the Fourth Proportional to 19,267.72, 28,902.99 and 8,173.15

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Solution

The fourth proportional to 19,267.72, 28,902.99 and 8,173.15 is: 12,260.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,267.72 : 28,902.99 = 8,173.15 : x
  2. Step 2: Convert to fraction form
    19,267.72/28,902.99 = 8,173.15/x
  3. Step 3: Cross multiply
    19,267.72x = 28,902.99 × 8,173.15
  4. Step 4: Simplify right side
    19,267.72x = 236,228,431.11
  5. Step 5: Solve for x
    x = 236,228,431.11/19,267.72
  6. Step 6: Final answer
    x = 12,260.32

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.