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Finding the Fourth Proportional to 14,555.51, 20,086.43 and 8,183.16

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Solution

The fourth proportional to 14,555.51, 20,086.43 and 8,183.16 is: 11,292.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,555.51 : 20,086.43 = 8,183.16 : x
  2. Step 2: Convert to fraction form
    14,555.51/20,086.43 = 8,183.16/x
  3. Step 3: Cross multiply
    14,555.51x = 20,086.43 × 8,183.16
  4. Step 4: Simplify right side
    14,555.51x = 164,370,429.60
  5. Step 5: Solve for x
    x = 164,370,429.60/14,555.51
  6. Step 6: Final answer
    x = 11,292.66

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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.