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Finding the Fourth Proportional to 78,884.80, 118,269.60 and 32,113.60

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Solution

The fourth proportional to 78,884.80, 118,269.60 and 32,113.60 is: 48,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,884.80 : 118,269.60 = 32,113.60 : x
  2. Step 2: Convert to fraction form
    78,884.80/118,269.60 = 32,113.60/x
  3. Step 3: Cross multiply
    78,884.80x = 118,269.60 × 32,113.60
  4. Step 4: Simplify right side
    78,884.80x = 3,798,062,626.56
  5. Step 5: Solve for x
    x = 3,798,062,626.56/78,884.80
  6. Step 6: Final answer
    x = 48,146.95

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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.