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Finding the Fourth Proportional to 19,095.30, 28,631.44 and 8,563.42

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Solution

The fourth proportional to 19,095.30, 28,631.44 and 8,563.42 is: 12,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,095.30 : 28,631.44 = 8,563.42 : x
  2. Step 2: Convert to fraction form
    19,095.30/28,631.44 = 8,563.42/x
  3. Step 3: Cross multiply
    19,095.30x = 28,631.44 × 8,563.42
  4. Step 4: Simplify right side
    19,095.30x = 245,183,045.92
  5. Step 5: Solve for x
    x = 245,183,045.92/19,095.30
  6. Step 6: Final answer
    x = 12,839.97

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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.