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Finding the Fourth Proportional to 18,297.06, 25,249.95 and 9,913.50

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Solution

The fourth proportional to 18,297.06, 25,249.95 and 9,913.50 is: 13,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.06 : 25,249.95 = 9,913.50 : x
  2. Step 2: Convert to fraction form
    18,297.06/25,249.95 = 9,913.50/x
  3. Step 3: Cross multiply
    18,297.06x = 25,249.95 × 9,913.50
  4. Step 4: Simplify right side
    18,297.06x = 250,315,379.33
  5. Step 5: Solve for x
    x = 250,315,379.33/18,297.06
  6. Step 6: Final answer
    x = 13,680.63

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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.