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Finding the Fourth Proportional to 18,074.56, 26,991.56 and 17,879.08

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Solution

The fourth proportional to 18,074.56, 26,991.56 and 17,879.08 is: 26,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,074.56 : 26,991.56 = 17,879.08 : x
  2. Step 2: Convert to fraction form
    18,074.56/26,991.56 = 17,879.08/x
  3. Step 3: Cross multiply
    18,074.56x = 26,991.56 × 17,879.08
  4. Step 4: Simplify right side
    18,074.56x = 482,584,260.56
  5. Step 5: Solve for x
    x = 482,584,260.56/18,074.56
  6. Step 6: Final answer
    x = 26,699.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.