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Finding the Fourth Proportional to 18,731.35, 28,098.11 and 7,044.67

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Solution

The fourth proportional to 18,731.35, 28,098.11 and 7,044.67 is: 10,567.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.35 : 28,098.11 = 7,044.67 : x
  2. Step 2: Convert to fraction form
    18,731.35/28,098.11 = 7,044.67/x
  3. Step 3: Cross multiply
    18,731.35x = 28,098.11 × 7,044.67
  4. Step 4: Simplify right side
    18,731.35x = 197,941,912.57
  5. Step 5: Solve for x
    x = 197,941,912.57/18,731.35
  6. Step 6: Final answer
    x = 10,567.41

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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.