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Finding the Fourth Proportional to 18,693.63, 27,974.62 and 11,676.95

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Solution

The fourth proportional to 18,693.63, 27,974.62 and 11,676.95 is: 17,474.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.63 : 27,974.62 = 11,676.95 : x
  2. Step 2: Convert to fraction form
    18,693.63/27,974.62 = 11,676.95/x
  3. Step 3: Cross multiply
    18,693.63x = 27,974.62 × 11,676.95
  4. Step 4: Simplify right side
    18,693.63x = 326,658,113.61
  5. Step 5: Solve for x
    x = 326,658,113.61/18,693.63
  6. Step 6: Final answer
    x = 17,474.30

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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.