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Finding the Fourth Proportional to 353,086.26, 487,248.80 and 200,138.56

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Solution

The fourth proportional to 353,086.26, 487,248.80 and 200,138.56 is: 276,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,086.26 : 487,248.80 = 200,138.56 : x
  2. Step 2: Convert to fraction form
    353,086.26/487,248.80 = 200,138.56/x
  3. Step 3: Cross multiply
    353,086.26x = 487,248.80 × 200,138.56
  4. Step 4: Simplify right side
    353,086.26x = 97,517,273,193.73
  5. Step 5: Solve for x
    x = 97,517,273,193.73/353,086.26
  6. Step 6: Final answer
    x = 276,185.41

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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.