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Finding the Fourth Proportional to 104,485.80, 156,728.70 and 65,022.60

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Solution

The fourth proportional to 104,485.80, 156,728.70 and 65,022.60 is: 97,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,485.80 : 156,728.70 = 65,022.60 : x
  2. Step 2: Convert to fraction form
    104,485.80/156,728.70 = 65,022.60/x
  3. Step 3: Cross multiply
    104,485.80x = 156,728.70 × 65,022.60
  4. Step 4: Simplify right side
    104,485.80x = 10,190,907,568.62
  5. Step 5: Solve for x
    x = 10,190,907,568.62/104,485.80
  6. Step 6: Final answer
    x = 97,533.90

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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.