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Finding the Fourth Proportional to 8,481.79, 11,700.84 and 5,650.48

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Solution

The fourth proportional to 8,481.79, 11,700.84 and 5,650.48 is: 7,794.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.79 : 11,700.84 = 5,650.48 : x
  2. Step 2: Convert to fraction form
    8,481.79/11,700.84 = 5,650.48/x
  3. Step 3: Cross multiply
    8,481.79x = 11,700.84 × 5,650.48
  4. Step 4: Simplify right side
    8,481.79x = 66,115,362.40
  5. Step 5: Solve for x
    x = 66,115,362.40/8,481.79
  6. Step 6: Final answer
    x = 7,794.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.