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Finding the Fourth Proportional to 19,243, 28,781.11 and 11,326.65

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Solution

The fourth proportional to 19,243, 28,781.11 and 11,326.65 is: 16,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243 : 28,781.11 = 11,326.65 : x
  2. Step 2: Convert to fraction form
    19,243/28,781.11 = 11,326.65/x
  3. Step 3: Cross multiply
    19,243x = 28,781.11 × 11,326.65
  4. Step 4: Simplify right side
    19,243x = 325,993,559.58
  5. Step 5: Solve for x
    x = 325,993,559.58/19,243
  6. Step 6: Final answer
    x = 16,940.89

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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.