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Finding the Fourth Proportional to 19,855.54, 29,786.18 and 6,711.67

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Solution

The fourth proportional to 19,855.54, 29,786.18 and 6,711.67 is: 10,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.54 : 29,786.18 = 6,711.67 : x
  2. Step 2: Convert to fraction form
    19,855.54/29,786.18 = 6,711.67/x
  3. Step 3: Cross multiply
    19,855.54x = 29,786.18 × 6,711.67
  4. Step 4: Simplify right side
    19,855.54x = 199,915,010.72
  5. Step 5: Solve for x
    x = 199,915,010.72/19,855.54
  6. Step 6: Final answer
    x = 10,068.48

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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.