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Finding the Fourth Proportional to 360,930.32, 496,942.56 and 317,879.36

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Solution

The fourth proportional to 360,930.32, 496,942.56 and 317,879.36 is: 437,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,930.32 : 496,942.56 = 317,879.36 : x
  2. Step 2: Convert to fraction form
    360,930.32/496,942.56 = 317,879.36/x
  3. Step 3: Cross multiply
    360,930.32x = 496,942.56 × 317,879.36
  4. Step 4: Simplify right side
    360,930.32x = 157,967,782,929.56
  5. Step 5: Solve for x
    x = 157,967,782,929.56/360,930.32
  6. Step 6: Final answer
    x = 437,668.36

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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.