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Finding the Fourth Proportional to 539,383.60, 809,269.80 and 519,943.60

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Solution

The fourth proportional to 539,383.60, 809,269.80 and 519,943.60 is: 780,102.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,383.60 : 809,269.80 = 519,943.60 : x
  2. Step 2: Convert to fraction form
    539,383.60/809,269.80 = 519,943.60/x
  3. Step 3: Cross multiply
    539,383.60x = 809,269.80 × 519,943.60
  4. Step 4: Simplify right side
    539,383.60x = 420,774,653,183.28
  5. Step 5: Solve for x
    x = 420,774,653,183.28/539,383.60
  6. Step 6: Final answer
    x = 780,102.79

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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.