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Finding the Fourth Proportional to 22,481.70, 33,699.90 and 7,680.54

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Solution

The fourth proportional to 22,481.70, 33,699.90 and 7,680.54 is: 11,513.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,481.70 : 33,699.90 = 7,680.54 : x
  2. Step 2: Convert to fraction form
    22,481.70/33,699.90 = 7,680.54/x
  3. Step 3: Cross multiply
    22,481.70x = 33,699.90 × 7,680.54
  4. Step 4: Simplify right side
    22,481.70x = 258,833,429.95
  5. Step 5: Solve for x
    x = 258,833,429.95/22,481.70
  6. Step 6: Final answer
    x = 11,513.07

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1.5x scale

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.