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Finding the Fourth Proportional to 20,474.75, 30,716.99 and 6,623.75

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Solution

The fourth proportional to 20,474.75, 30,716.99 and 6,623.75 is: 9,937.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.75 : 30,716.99 = 6,623.75 : x
  2. Step 2: Convert to fraction form
    20,474.75/30,716.99 = 6,623.75/x
  3. Step 3: Cross multiply
    20,474.75x = 30,716.99 × 6,623.75
  4. Step 4: Simplify right side
    20,474.75x = 203,461,662.51
  5. Step 5: Solve for x
    x = 203,461,662.51/20,474.75
  6. Step 6: Final answer
    x = 9,937.20

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Why These Related Problems?

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