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Finding the Fourth Proportional to 439,000.56, 605,808.37 and 257,709.60

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Solution

The fourth proportional to 439,000.56, 605,808.37 and 257,709.60 is: 355,631.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,000.56 : 605,808.37 = 257,709.60 : x
  2. Step 2: Convert to fraction form
    439,000.56/605,808.37 = 257,709.60/x
  3. Step 3: Cross multiply
    439,000.56x = 605,808.37 × 257,709.60
  4. Step 4: Simplify right side
    439,000.56x = 156,122,632,709.35
  5. Step 5: Solve for x
    x = 156,122,632,709.35/439,000.56
  6. Step 6: Final answer
    x = 355,631.97

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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.