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Finding the Fourth Proportional to 539,380.90, 809,168.55 and 223,869.70

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Solution

The fourth proportional to 539,380.90, 809,168.55 and 223,869.70 is: 335,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,380.90 : 809,168.55 = 223,869.70 : x
  2. Step 2: Convert to fraction form
    539,380.90/809,168.55 = 223,869.70/x
  3. Step 3: Cross multiply
    539,380.90x = 809,168.55 × 223,869.70
  4. Step 4: Simplify right side
    539,380.90x = 181,148,320,537.94
  5. Step 5: Solve for x
    x = 181,148,320,537.94/539,380.90
  6. Step 6: Final answer
    x = 335,844.89

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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.