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Finding the Fourth Proportional to 18,362.97, 25,327.78 and 16,855.32

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Solution

The fourth proportional to 18,362.97, 25,327.78 and 16,855.32 is: 23,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.97 : 25,327.78 = 16,855.32 : x
  2. Step 2: Convert to fraction form
    18,362.97/25,327.78 = 16,855.32/x
  3. Step 3: Cross multiply
    18,362.97x = 25,327.78 × 16,855.32
  4. Step 4: Simplify right side
    18,362.97x = 426,907,763.05
  5. Step 5: Solve for x
    x = 426,907,763.05/18,362.97
  6. Step 6: Final answer
    x = 23,248.30

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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.