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Finding the Fourth Proportional to 13,608.93, 20,403.81 and 6,203.19

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Solution

The fourth proportional to 13,608.93, 20,403.81 and 6,203.19 is: 9,300.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.93 : 20,403.81 = 6,203.19 : x
  2. Step 2: Convert to fraction form
    13,608.93/20,403.81 = 6,203.19/x
  3. Step 3: Cross multiply
    13,608.93x = 20,403.81 × 6,203.19
  4. Step 4: Simplify right side
    13,608.93x = 126,568,710.15
  5. Step 5: Solve for x
    x = 126,568,710.15/13,608.93
  6. Step 6: Final answer
    x = 9,300.42

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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.