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Finding the Fourth Proportional to 18,418.70, 25,844.50 and 18,418.70

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Solution

The fourth proportional to 18,418.70, 25,844.50 and 18,418.70 is: 25,844.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.70 : 25,844.50 = 18,418.70 : x
  2. Step 2: Convert to fraction form
    18,418.70/25,844.50 = 18,418.70/x
  3. Step 3: Cross multiply
    18,418.70x = 25,844.50 × 18,418.70
  4. Step 4: Simplify right side
    18,418.70x = 476,022,092.15
  5. Step 5: Solve for x
    x = 476,022,092.15/18,418.70
  6. Step 6: Final answer
    x = 25,844.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.