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Finding the Fourth Proportional to 18,566.80, 25,622.22 and 11,016.80

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Solution

The fourth proportional to 18,566.80, 25,622.22 and 11,016.80 is: 15,203.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,566.80 : 25,622.22 = 11,016.80 : x
  2. Step 2: Convert to fraction form
    18,566.80/25,622.22 = 11,016.80/x
  3. Step 3: Cross multiply
    18,566.80x = 25,622.22 × 11,016.80
  4. Step 4: Simplify right side
    18,566.80x = 282,274,873.30
  5. Step 5: Solve for x
    x = 282,274,873.30/18,566.80
  6. Step 6: Final answer
    x = 15,203.21

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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.