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Finding the Fourth Proportional to 104,469.60, 156,639.60 and 60,074.40

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Solution

The fourth proportional to 104,469.60, 156,639.60 and 60,074.40 is: 90,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,469.60 : 156,639.60 = 60,074.40 : x
  2. Step 2: Convert to fraction form
    104,469.60/156,639.60 = 60,074.40/x
  3. Step 3: Cross multiply
    104,469.60x = 156,639.60 × 60,074.40
  4. Step 4: Simplify right side
    104,469.60x = 9,410,029,986.24
  5. Step 5: Solve for x
    x = 9,410,029,986.24/104,469.60
  6. Step 6: Final answer
    x = 90,074.34

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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.