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Finding the Fourth Proportional to 18,227.94, 25,154.88 and 11,940.32

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Solution

The fourth proportional to 18,227.94, 25,154.88 and 11,940.32 is: 16,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,227.94 : 25,154.88 = 11,940.32 : x
  2. Step 2: Convert to fraction form
    18,227.94/25,154.88 = 11,940.32/x
  3. Step 3: Cross multiply
    18,227.94x = 25,154.88 × 11,940.32
  4. Step 4: Simplify right side
    18,227.94x = 300,357,316.76
  5. Step 5: Solve for x
    x = 300,357,316.76/18,227.94
  6. Step 6: Final answer
    x = 16,477.85

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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.