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Finding the Fourth Proportional to 8,682.44, 11,979.60 and 5,495.48

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Solution

The fourth proportional to 8,682.44, 11,979.60 and 5,495.48 is: 7,582.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.44 : 11,979.60 = 5,495.48 : x
  2. Step 2: Convert to fraction form
    8,682.44/11,979.60 = 5,495.48/x
  3. Step 3: Cross multiply
    8,682.44x = 11,979.60 × 5,495.48
  4. Step 4: Simplify right side
    8,682.44x = 65,833,652.21
  5. Step 5: Solve for x
    x = 65,833,652.21/8,682.44
  6. Step 6: Final answer
    x = 7,582.39

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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.