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Finding the Fourth Proportional to 19,210.65, 28,796.24 and 7,361.21

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Solution

The fourth proportional to 19,210.65, 28,796.24 and 7,361.21 is: 11,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.65 : 28,796.24 = 7,361.21 : x
  2. Step 2: Convert to fraction form
    19,210.65/28,796.24 = 7,361.21/x
  3. Step 3: Cross multiply
    19,210.65x = 28,796.24 × 7,361.21
  4. Step 4: Simplify right side
    19,210.65x = 211,975,183.97
  5. Step 5: Solve for x
    x = 211,975,183.97/19,210.65
  6. Step 6: Final answer
    x = 11,034.25

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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.