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Finding the Fourth Proportional to 22,485.80, 33,717.54 and 7,690.52

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Solution

The fourth proportional to 22,485.80, 33,717.54 and 7,690.52 is: 11,531.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,485.80 : 33,717.54 = 7,690.52 : x
  2. Step 2: Convert to fraction form
    22,485.80/33,717.54 = 7,690.52/x
  3. Step 3: Cross multiply
    22,485.80x = 33,717.54 × 7,690.52
  4. Step 4: Simplify right side
    22,485.80x = 259,305,415.72
  5. Step 5: Solve for x
    x = 259,305,415.72/22,485.80
  6. Step 6: Final answer
    x = 11,531.96

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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.