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Finding the Fourth Proportional to 368,254.31, 552,377.78 and 128,367.73

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Solution

The fourth proportional to 368,254.31, 552,377.78 and 128,367.73 is: 192,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,254.31 : 552,377.78 = 128,367.73 : x
  2. Step 2: Convert to fraction form
    368,254.31/552,377.78 = 128,367.73/x
  3. Step 3: Cross multiply
    368,254.31x = 552,377.78 × 128,367.73
  4. Step 4: Simplify right side
    368,254.31x = 70,907,478,317.31
  5. Step 5: Solve for x
    x = 70,907,478,317.31/368,254.31
  6. Step 6: Final answer
    x = 192,550.30

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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.