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Finding the Fourth Proportional to 499,429.44, 689,215.28 and 273,074.94

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Solution

The fourth proportional to 499,429.44, 689,215.28 and 273,074.94 is: 376,844.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,429.44 : 689,215.28 = 273,074.94 : x
  2. Step 2: Convert to fraction form
    499,429.44/689,215.28 = 273,074.94/x
  3. Step 3: Cross multiply
    499,429.44x = 689,215.28 × 273,074.94
  4. Step 4: Simplify right side
    499,429.44x = 188,207,419,867.71
  5. Step 5: Solve for x
    x = 188,207,419,867.71/499,429.44
  6. Step 6: Final answer
    x = 376,844.86

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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.