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Finding the Fourth Proportional to 19,205.98, 28,789.16 and 7,356.51

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Solution

The fourth proportional to 19,205.98, 28,789.16 and 7,356.51 is: 11,027.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.98 : 28,789.16 = 7,356.51 : x
  2. Step 2: Convert to fraction form
    19,205.98/28,789.16 = 7,356.51/x
  3. Step 3: Cross multiply
    19,205.98x = 28,789.16 × 7,356.51
  4. Step 4: Simplify right side
    19,205.98x = 211,787,706.65
  5. Step 5: Solve for x
    x = 211,787,706.65/19,205.98
  6. Step 6: Final answer
    x = 11,027.18

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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.