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Finding the Fourth Proportional to 19,489.69, 26,893.89 and 10,993.14

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Solution

The fourth proportional to 19,489.69, 26,893.89 and 10,993.14 is: 15,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489.69 : 26,893.89 = 10,993.14 : x
  2. Step 2: Convert to fraction form
    19,489.69/26,893.89 = 10,993.14/x
  3. Step 3: Cross multiply
    19,489.69x = 26,893.89 × 10,993.14
  4. Step 4: Simplify right side
    19,489.69x = 295,648,297.91
  5. Step 5: Solve for x
    x = 295,648,297.91/19,489.69
  6. Step 6: Final answer
    x = 15,169.47

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.