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Finding the Fourth Proportional to 285,648.59, 394,320.62 and 199,944.17

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Solution

The fourth proportional to 285,648.59, 394,320.62 and 199,944.17 is: 276,010.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,648.59 : 394,320.62 = 199,944.17 : x
  2. Step 2: Convert to fraction form
    285,648.59/394,320.62 = 199,944.17/x
  3. Step 3: Cross multiply
    285,648.59x = 394,320.62 × 199,944.17
  4. Step 4: Simplify right side
    285,648.59x = 78,842,107,608.04
  5. Step 5: Solve for x
    x = 78,842,107,608.04/285,648.59
  6. Step 6: Final answer
    x = 276,010.84

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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.