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Finding the Fourth Proportional to 17,176.30, 25,764.45 and 8,428.30

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Solution

The fourth proportional to 17,176.30, 25,764.45 and 8,428.30 is: 12,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,176.30 : 25,764.45 = 8,428.30 : x
  2. Step 2: Convert to fraction form
    17,176.30/25,764.45 = 8,428.30/x
  3. Step 3: Cross multiply
    17,176.30x = 25,764.45 × 8,428.30
  4. Step 4: Simplify right side
    17,176.30x = 217,150,513.94
  5. Step 5: Solve for x
    x = 217,150,513.94/17,176.30
  6. Step 6: Final answer
    x = 12,642.45

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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.