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Finding the Fourth Proportional to 18,474.76, 27,704.82 and 10,689.04

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Solution

The fourth proportional to 18,474.76, 27,704.82 and 10,689.04 is: 16,029.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.76 : 27,704.82 = 10,689.04 : x
  2. Step 2: Convert to fraction form
    18,474.76/27,704.82 = 10,689.04/x
  3. Step 3: Cross multiply
    18,474.76x = 27,704.82 × 10,689.04
  4. Step 4: Simplify right side
    18,474.76x = 296,137,929.17
  5. Step 5: Solve for x
    x = 296,137,929.17/18,474.76
  6. Step 6: Final answer
    x = 16,029.32

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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.