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Finding the Fourth Proportional to 264,016.80, 396,025.20 and 86,529.60

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Solution

The fourth proportional to 264,016.80, 396,025.20 and 86,529.60 is: 129,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,016.80 : 396,025.20 = 86,529.60 : x
  2. Step 2: Convert to fraction form
    264,016.80/396,025.20 = 86,529.60/x
  3. Step 3: Cross multiply
    264,016.80x = 396,025.20 × 86,529.60
  4. Step 4: Simplify right side
    264,016.80x = 34,267,902,145.92
  5. Step 5: Solve for x
    x = 34,267,902,145.92/264,016.80
  6. Step 6: Final answer
    x = 129,794.40

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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.