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Finding the Fourth Proportional to 685,907.87, 946,562.36 and 395,514.36

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Solution

The fourth proportional to 685,907.87, 946,562.36 and 395,514.36 is: 545,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,907.87 : 946,562.36 = 395,514.36 : x
  2. Step 2: Convert to fraction form
    685,907.87/946,562.36 = 395,514.36/x
  3. Step 3: Cross multiply
    685,907.87x = 946,562.36 × 395,514.36
  4. Step 4: Simplify right side
    685,907.87x = 374,379,004,037.92
  5. Step 5: Solve for x
    x = 374,379,004,037.92/685,907.87
  6. Step 6: Final answer
    x = 545,815.30

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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.