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Finding the Fourth Proportional to 539,280.80, 809,212.80 and 223,769.60

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Solution

The fourth proportional to 539,280.80, 809,212.80 and 223,769.60 is: 335,775.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,280.80 : 809,212.80 = 223,769.60 : x
  2. Step 2: Convert to fraction form
    539,280.80/809,212.80 = 223,769.60/x
  3. Step 3: Cross multiply
    539,280.80x = 809,212.80 × 223,769.60
  4. Step 4: Simplify right side
    539,280.80x = 181,077,224,570.88
  5. Step 5: Solve for x
    x = 181,077,224,570.88/539,280.80
  6. Step 6: Final answer
    x = 335,775.40

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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.