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Finding the Fourth Proportional to 22,277.28, 30,731.76 and 18,739.20

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Solution

The fourth proportional to 22,277.28, 30,731.76 and 18,739.20 is: 25,850.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,277.28 : 30,731.76 = 18,739.20 : x
  2. Step 2: Convert to fraction form
    22,277.28/30,731.76 = 18,739.20/x
  3. Step 3: Cross multiply
    22,277.28x = 30,731.76 × 18,739.20
  4. Step 4: Simplify right side
    22,277.28x = 575,888,596.99
  5. Step 5: Solve for x
    x = 575,888,596.99/22,277.28
  6. Step 6: Final answer
    x = 25,850.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.