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Finding the Fourth Proportional to 122,527.20, 183,790.80 and 52,413.60

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Solution

The fourth proportional to 122,527.20, 183,790.80 and 52,413.60 is: 78,620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,527.20 : 183,790.80 = 52,413.60 : x
  2. Step 2: Convert to fraction form
    122,527.20/183,790.80 = 52,413.60/x
  3. Step 3: Cross multiply
    122,527.20x = 183,790.80 × 52,413.60
  4. Step 4: Simplify right side
    122,527.20x = 9,633,137,474.88
  5. Step 5: Solve for x
    x = 9,633,137,474.88/122,527.20
  6. Step 6: Final answer
    x = 78,620.40

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1.5x scale

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.