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Finding the Fourth Proportional to 503,121.40, 694,318.32 and 276,766.88

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Solution

The fourth proportional to 503,121.40, 694,318.32 and 276,766.88 is: 381,944.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,121.40 : 694,318.32 = 276,766.88 : x
  2. Step 2: Convert to fraction form
    503,121.40/694,318.32 = 276,766.88/x
  3. Step 3: Cross multiply
    503,121.40x = 694,318.32 × 276,766.88
  4. Step 4: Simplify right side
    503,121.40x = 192,164,315,153.24
  5. Step 5: Solve for x
    x = 192,164,315,153.24/503,121.40
  6. Step 6: Final answer
    x = 381,944.23

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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.