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Finding the Fourth Proportional to 515,389.44, 711,213.33 and 285,944.28

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Solution

The fourth proportional to 515,389.44, 711,213.33 and 285,944.28 is: 394,589.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,389.44 : 711,213.33 = 285,944.28 : x
  2. Step 2: Convert to fraction form
    515,389.44/711,213.33 = 285,944.28/x
  3. Step 3: Cross multiply
    515,389.44x = 711,213.33 × 285,944.28
  4. Step 4: Simplify right side
    515,389.44x = 203,367,384,370.63
  5. Step 5: Solve for x
    x = 203,367,384,370.63/515,389.44
  6. Step 6: Final answer
    x = 394,589.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.