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Finding the Fourth Proportional to 205,792.60, 308,228.10 and 168,928.60

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Solution

The fourth proportional to 205,792.60, 308,228.10 and 168,928.60 is: 253,014.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,792.60 : 308,228.10 = 168,928.60 : x
  2. Step 2: Convert to fraction form
    205,792.60/308,228.10 = 168,928.60/x
  3. Step 3: Cross multiply
    205,792.60x = 308,228.10 × 168,928.60
  4. Step 4: Simplify right side
    205,792.60x = 52,068,541,413.66
  5. Step 5: Solve for x
    x = 52,068,541,413.66/205,792.60
  6. Step 6: Final answer
    x = 253,014.64

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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.