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Finding the Fourth Proportional to 18,636.16, 27,955.40 and 6,945.44

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Solution

The fourth proportional to 18,636.16, 27,955.40 and 6,945.44 is: 10,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.16 : 27,955.40 = 6,945.44 : x
  2. Step 2: Convert to fraction form
    18,636.16/27,955.40 = 6,945.44/x
  3. Step 3: Cross multiply
    18,636.16x = 27,955.40 × 6,945.44
  4. Step 4: Simplify right side
    18,636.16x = 194,162,553.38
  5. Step 5: Solve for x
    x = 194,162,553.38/18,636.16
  6. Step 6: Final answer
    x = 10,418.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.