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Finding the Fourth Proportional to 313,916.20, 470,096.70 and 251,708.20

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Solution

The fourth proportional to 313,916.20, 470,096.70 and 251,708.20 is: 376,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,916.20 : 470,096.70 = 251,708.20 : x
  2. Step 2: Convert to fraction form
    313,916.20/470,096.70 = 251,708.20/x
  3. Step 3: Cross multiply
    313,916.20x = 470,096.70 × 251,708.20
  4. Step 4: Simplify right side
    313,916.20x = 118,327,194,182.94
  5. Step 5: Solve for x
    x = 118,327,194,182.94/313,916.20
  6. Step 6: Final answer
    x = 376,938.80

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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.