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Finding the Fourth Proportional to 30,351.90, 41,882.57 and 16,921.89

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Solution

The fourth proportional to 30,351.90, 41,882.57 and 16,921.89 is: 23,350.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.90 : 41,882.57 = 16,921.89 : x
  2. Step 2: Convert to fraction form
    30,351.90/41,882.57 = 16,921.89/x
  3. Step 3: Cross multiply
    30,351.90x = 41,882.57 × 16,921.89
  4. Step 4: Simplify right side
    30,351.90x = 708,732,157.85
  5. Step 5: Solve for x
    x = 708,732,157.85/30,351.90
  6. Step 6: Final answer
    x = 23,350.50

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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.