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Finding the Fourth Proportional to 19,208.75, 28,793.39 and 7,359.31

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Solution

The fourth proportional to 19,208.75, 28,793.39 and 7,359.31 is: 11,031.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208.75 : 28,793.39 = 7,359.31 : x
  2. Step 2: Convert to fraction form
    19,208.75/28,793.39 = 7,359.31/x
  3. Step 3: Cross multiply
    19,208.75x = 28,793.39 × 7,359.31
  4. Step 4: Simplify right side
    19,208.75x = 211,899,559.32
  5. Step 5: Solve for x
    x = 211,899,559.32/19,208.75
  6. Step 6: Final answer
    x = 11,031.41

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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.