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Finding the Fourth Proportional to 74,382.98, 111,574.44 and 21,792.44

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Solution

The fourth proportional to 74,382.98, 111,574.44 and 21,792.44 is: 32,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,382.98 : 111,574.44 = 21,792.44 : x
  2. Step 2: Convert to fraction form
    74,382.98/111,574.44 = 21,792.44/x
  3. Step 3: Cross multiply
    74,382.98x = 111,574.44 × 21,792.44
  4. Step 4: Simplify right side
    74,382.98x = 2,431,479,568.17
  5. Step 5: Solve for x
    x = 2,431,479,568.17/74,382.98
  6. Step 6: Final answer
    x = 32,688.66

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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.