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Finding the Fourth Proportional to 548,427.38, 822,639.44 and 193,355.78

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Solution

The fourth proportional to 548,427.38, 822,639.44 and 193,355.78 is: 290,033.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,427.38 : 822,639.44 = 193,355.78 : x
  2. Step 2: Convert to fraction form
    548,427.38/822,639.44 = 193,355.78/x
  3. Step 3: Cross multiply
    548,427.38x = 822,639.44 × 193,355.78
  4. Step 4: Simplify right side
    548,427.38x = 159,062,090,579.96
  5. Step 5: Solve for x
    x = 159,062,090,579.96/548,427.38
  6. Step 6: Final answer
    x = 290,033.10

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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.