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Finding the Fourth Proportional to 579,468.40, 869,202.60 and 264,540.40

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Solution

The fourth proportional to 579,468.40, 869,202.60 and 264,540.40 is: 396,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,468.40 : 869,202.60 = 264,540.40 : x
  2. Step 2: Convert to fraction form
    579,468.40/869,202.60 = 264,540.40/x
  3. Step 3: Cross multiply
    579,468.40x = 869,202.60 × 264,540.40
  4. Step 4: Simplify right side
    579,468.40x = 229,939,203,485.04
  5. Step 5: Solve for x
    x = 229,939,203,485.04/579,468.40
  6. Step 6: Final answer
    x = 396,810.60

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Double scale
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Similar ratio
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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.