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Finding the Fourth Proportional to 366,942.60, 550,413.90 and 156,990.60

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Solution

The fourth proportional to 366,942.60, 550,413.90 and 156,990.60 is: 235,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,942.60 : 550,413.90 = 156,990.60 : x
  2. Step 2: Convert to fraction form
    366,942.60/550,413.90 = 156,990.60/x
  3. Step 3: Cross multiply
    366,942.60x = 550,413.90 × 156,990.60
  4. Step 4: Simplify right side
    366,942.60x = 86,409,808,409.34
  5. Step 5: Solve for x
    x = 86,409,808,409.34/366,942.60
  6. Step 6: Final answer
    x = 235,485.90

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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.