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Finding the Fourth Proportional to 104,626.60, 156,939.90 and 69,452.20

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Solution

The fourth proportional to 104,626.60, 156,939.90 and 69,452.20 is: 104,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,626.60 : 156,939.90 = 69,452.20 : x
  2. Step 2: Convert to fraction form
    104,626.60/156,939.90 = 69,452.20/x
  3. Step 3: Cross multiply
    104,626.60x = 156,939.90 × 69,452.20
  4. Step 4: Simplify right side
    104,626.60x = 10,899,821,322.78
  5. Step 5: Solve for x
    x = 10,899,821,322.78/104,626.60
  6. Step 6: Final answer
    x = 104,178.30

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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.