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Finding the Fourth Proportional to 10,391.25, 14,339.94 and 5,675.85

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Solution

The fourth proportional to 10,391.25, 14,339.94 and 5,675.85 is: 7,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.25 : 14,339.94 = 5,675.85 : x
  2. Step 2: Convert to fraction form
    10,391.25/14,339.94 = 5,675.85/x
  3. Step 3: Cross multiply
    10,391.25x = 14,339.94 × 5,675.85
  4. Step 4: Simplify right side
    10,391.25x = 81,391,348.45
  5. Step 5: Solve for x
    x = 81,391,348.45/10,391.25
  6. Step 6: Final answer
    x = 7,832.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.