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Finding the Fourth Proportional to 572,408.40, 858,709.80 and 306,096.60

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Solution

The fourth proportional to 572,408.40, 858,709.80 and 306,096.60 is: 459,196.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,408.40 : 858,709.80 = 306,096.60 : x
  2. Step 2: Convert to fraction form
    572,408.40/858,709.80 = 306,096.60/x
  3. Step 3: Cross multiply
    572,408.40x = 858,709.80 × 306,096.60
  4. Step 4: Simplify right side
    572,408.40x = 262,848,150,166.68
  5. Step 5: Solve for x
    x = 262,848,150,166.68/572,408.40
  6. Step 6: Final answer
    x = 459,196.88

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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.