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Finding the Fourth Proportional to 539,926.80, 809,890.20 and 362,979.60

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Solution

The fourth proportional to 539,926.80, 809,890.20 and 362,979.60 is: 544,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,926.80 : 809,890.20 = 362,979.60 : x
  2. Step 2: Convert to fraction form
    539,926.80/809,890.20 = 362,979.60/x
  3. Step 3: Cross multiply
    539,926.80x = 809,890.20 × 362,979.60
  4. Step 4: Simplify right side
    539,926.80x = 293,973,620,839.92
  5. Step 5: Solve for x
    x = 293,973,620,839.92/539,926.80
  6. Step 6: Final answer
    x = 544,469.40

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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.