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Finding the Fourth Proportional to 19,242.75, 28,865.22 and 5,392.83

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Solution

The fourth proportional to 19,242.75, 28,865.22 and 5,392.83 is: 8,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,242.75 : 28,865.22 = 5,392.83 : x
  2. Step 2: Convert to fraction form
    19,242.75/28,865.22 = 5,392.83/x
  3. Step 3: Cross multiply
    19,242.75x = 28,865.22 × 5,392.83
  4. Step 4: Simplify right side
    19,242.75x = 155,665,224.37
  5. Step 5: Solve for x
    x = 155,665,224.37/19,242.75
  6. Step 6: Final answer
    x = 8,089.55

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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.