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Finding the Fourth Proportional to 496,711.77, 685,520.60 and 278,956.23

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Solution

The fourth proportional to 496,711.77, 685,520.60 and 278,956.23 is: 384,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,711.77 : 685,520.60 = 278,956.23 : x
  2. Step 2: Convert to fraction form
    496,711.77/685,520.60 = 278,956.23/x
  3. Step 3: Cross multiply
    496,711.77x = 685,520.60 × 278,956.23
  4. Step 4: Simplify right side
    496,711.77x = 191,230,240,768.56
  5. Step 5: Solve for x
    x = 191,230,240,768.56/496,711.77
  6. Step 6: Final answer
    x = 384,992.37

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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.