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Finding the Fourth Proportional to 22,411.94, 33,618.17 and 7,621.16

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Solution

The fourth proportional to 22,411.94, 33,618.17 and 7,621.16 is: 11,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,411.94 : 33,618.17 = 7,621.16 : x
  2. Step 2: Convert to fraction form
    22,411.94/33,618.17 = 7,621.16/x
  3. Step 3: Cross multiply
    22,411.94x = 33,618.17 × 7,621.16
  4. Step 4: Simplify right side
    22,411.94x = 256,209,303.44
  5. Step 5: Solve for x
    x = 256,209,303.44/22,411.94
  6. Step 6: Final answer
    x = 11,431.82

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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.