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Finding the Fourth Proportional to 207,493.80, 310,722.30 and 166,021.80

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Solution

The fourth proportional to 207,493.80, 310,722.30 and 166,021.80 is: 248,617.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,493.80 : 310,722.30 = 166,021.80 : x
  2. Step 2: Convert to fraction form
    207,493.80/310,722.30 = 166,021.80/x
  3. Step 3: Cross multiply
    207,493.80x = 310,722.30 × 166,021.80
  4. Step 4: Simplify right side
    207,493.80x = 51,586,675,546.14
  5. Step 5: Solve for x
    x = 51,586,675,546.14/207,493.80
  6. Step 6: Final answer
    x = 248,617.91

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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.