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Finding the Fourth Proportional to 609,211.20, 911,743.20 and 534,561.60

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Solution

The fourth proportional to 609,211.20, 911,743.20 and 534,561.60 is: 800,022.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,211.20 : 911,743.20 = 534,561.60 : x
  2. Step 2: Convert to fraction form
    609,211.20/911,743.20 = 534,561.60/x
  3. Step 3: Cross multiply
    609,211.20x = 911,743.20 × 534,561.60
  4. Step 4: Simplify right side
    609,211.20x = 487,382,903,781.12
  5. Step 5: Solve for x
    x = 487,382,903,781.12/609,211.20
  6. Step 6: Final answer
    x = 800,022.89

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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.