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Finding the Fourth Proportional to 19,089.69, 28,629.05 and 7,996.11

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Solution

The fourth proportional to 19,089.69, 28,629.05 and 7,996.11 is: 11,991.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,089.69 : 28,629.05 = 7,996.11 : x
  2. Step 2: Convert to fraction form
    19,089.69/28,629.05 = 7,996.11/x
  3. Step 3: Cross multiply
    19,089.69x = 28,629.05 × 7,996.11
  4. Step 4: Simplify right side
    19,089.69x = 228,920,993.01
  5. Step 5: Solve for x
    x = 228,920,993.01/19,089.69
  6. Step 6: Final answer
    x = 11,991.87

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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.