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Finding the Fourth Proportional to 496,606.18, 685,269.11 and 278,764.98

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Solution

The fourth proportional to 496,606.18, 685,269.11 and 278,764.98 is: 384,669.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,606.18 : 685,269.11 = 278,764.98 : x
  2. Step 2: Convert to fraction form
    496,606.18/685,269.11 = 278,764.98/x
  3. Step 3: Cross multiply
    496,606.18x = 685,269.11 × 278,764.98
  4. Step 4: Simplify right side
    496,606.18x = 191,029,029,743.77
  5. Step 5: Solve for x
    x = 191,029,029,743.77/496,606.18
  6. Step 6: Final answer
    x = 384,669.05

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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.