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Finding the Fourth Proportional to 273,860.70, 409,869.45 and 190,916.70

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Solution

The fourth proportional to 273,860.70, 409,869.45 and 190,916.70 is: 285,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,860.70 : 409,869.45 = 190,916.70 : x
  2. Step 2: Convert to fraction form
    273,860.70/409,869.45 = 190,916.70/x
  3. Step 3: Cross multiply
    273,860.70x = 409,869.45 × 190,916.70
  4. Step 4: Simplify right side
    273,860.70x = 78,250,922,824.82
  5. Step 5: Solve for x
    x = 78,250,922,824.82/273,860.70
  6. Step 6: Final answer
    x = 285,732.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.