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Finding the Fourth Proportional to 386,137.60, 578,745.60 and 161,497.60

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Solution

The fourth proportional to 386,137.60, 578,745.60 and 161,497.60 is: 242,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,137.60 : 578,745.60 = 161,497.60 : x
  2. Step 2: Convert to fraction form
    386,137.60/578,745.60 = 161,497.60/x
  3. Step 3: Cross multiply
    386,137.60x = 578,745.60 × 161,497.60
  4. Step 4: Simplify right side
    386,137.60x = 93,466,025,410.56
  5. Step 5: Solve for x
    x = 93,466,025,410.56/386,137.60
  6. Step 6: Final answer
    x = 242,053.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.