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Finding the Fourth Proportional to 419,300.67, 578,558.05 and 247,272.60

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Solution

The fourth proportional to 419,300.67, 578,558.05 and 247,272.60 is: 341,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,300.67 : 578,558.05 = 247,272.60 : x
  2. Step 2: Convert to fraction form
    419,300.67/578,558.05 = 247,272.60/x
  3. Step 3: Cross multiply
    419,300.67x = 578,558.05 × 247,272.60
  4. Step 4: Simplify right side
    419,300.67x = 143,061,553,274.43
  5. Step 5: Solve for x
    x = 143,061,553,274.43/419,300.67
  6. Step 6: Final answer
    x = 341,190.85

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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.