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Finding the Fourth Proportional to 18,803.16, 25,940.01 and 12,087.54

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Solution

The fourth proportional to 18,803.16, 25,940.01 and 12,087.54 is: 16,675.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.16 : 25,940.01 = 12,087.54 : x
  2. Step 2: Convert to fraction form
    18,803.16/25,940.01 = 12,087.54/x
  3. Step 3: Cross multiply
    18,803.16x = 25,940.01 × 12,087.54
  4. Step 4: Simplify right side
    18,803.16x = 313,550,908.48
  5. Step 5: Solve for x
    x = 313,550,908.48/18,803.16
  6. Step 6: Final answer
    x = 16,675.44

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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.