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Finding the Fourth Proportional to 368,291.61, 551,474.81 and 345,843.44

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Solution

The fourth proportional to 368,291.61, 551,474.81 and 345,843.44 is: 517,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,291.61 : 551,474.81 = 345,843.44 : x
  2. Step 2: Convert to fraction form
    368,291.61/551,474.81 = 345,843.44/x
  3. Step 3: Cross multiply
    368,291.61x = 551,474.81 × 345,843.44
  4. Step 4: Simplify right side
    368,291.61x = 190,723,940,877.16
  5. Step 5: Solve for x
    x = 190,723,940,877.16/368,291.61
  6. Step 6: Final answer
    x = 517,861.22

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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.