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Finding the Fourth Proportional to 19,756.69, 29,635.05 and 8,069.91

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Solution

The fourth proportional to 19,756.69, 29,635.05 and 8,069.91 is: 12,104.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,756.69 : 29,635.05 = 8,069.91 : x
  2. Step 2: Convert to fraction form
    19,756.69/29,635.05 = 8,069.91/x
  3. Step 3: Cross multiply
    19,756.69x = 29,635.05 × 8,069.91
  4. Step 4: Simplify right side
    19,756.69x = 239,152,186.35
  5. Step 5: Solve for x
    x = 239,152,186.35/19,756.69
  6. Step 6: Final answer
    x = 12,104.87

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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.