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Finding the Fourth Proportional to 557,318.39, 769,099.34 and 315,647.67

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Solution

The fourth proportional to 557,318.39, 769,099.34 and 315,647.67 is: 435,593.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,318.39 : 769,099.34 = 315,647.67 : x
  2. Step 2: Convert to fraction form
    557,318.39/769,099.34 = 315,647.67/x
  3. Step 3: Cross multiply
    557,318.39x = 769,099.34 × 315,647.67
  4. Step 4: Simplify right side
    557,318.39x = 242,764,414,669.54
  5. Step 5: Solve for x
    x = 242,764,414,669.54/557,318.39
  6. Step 6: Final answer
    x = 435,593.76

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1.5x scale

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.