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Finding the Fourth Proportional to 118,903.80, 178,413.80 and 52,335.60

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Solution

The fourth proportional to 118,903.80, 178,413.80 and 52,335.60 is: 78,528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,903.80 : 178,413.80 = 52,335.60 : x
  2. Step 2: Convert to fraction form
    118,903.80/178,413.80 = 52,335.60/x
  3. Step 3: Cross multiply
    118,903.80x = 178,413.80 × 52,335.60
  4. Step 4: Simplify right side
    118,903.80x = 9,337,393,271.28
  5. Step 5: Solve for x
    x = 9,337,393,271.28/118,903.80
  6. Step 6: Final answer
    x = 78,528.97

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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.