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Finding the Fourth Proportional to 19,873.47, 29,806.97 and 7,390.56

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Solution

The fourth proportional to 19,873.47, 29,806.97 and 7,390.56 is: 11,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.47 : 29,806.97 = 7,390.56 : x
  2. Step 2: Convert to fraction form
    19,873.47/29,806.97 = 7,390.56/x
  3. Step 3: Cross multiply
    19,873.47x = 29,806.97 × 7,390.56
  4. Step 4: Simplify right side
    19,873.47x = 220,290,163.25
  5. Step 5: Solve for x
    x = 220,290,163.25/19,873.47
  6. Step 6: Final answer
    x = 11,084.64

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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.