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Finding the Fourth Proportional to 9,579.80, 13,221.42 and 5,804.48

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Solution

The fourth proportional to 9,579.80, 13,221.42 and 5,804.48 is: 8,010.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.80 : 13,221.42 = 5,804.48 : x
  2. Step 2: Convert to fraction form
    9,579.80/13,221.42 = 5,804.48/x
  3. Step 3: Cross multiply
    9,579.80x = 13,221.42 × 5,804.48
  4. Step 4: Simplify right side
    9,579.80x = 76,743,467.96
  5. Step 5: Solve for x
    x = 76,743,467.96/9,579.80
  6. Step 6: Final answer
    x = 8,010.97

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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.