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Finding the Fourth Proportional to 451,554.83, 622,634.90 and 287,992.56

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Solution

The fourth proportional to 451,554.83, 622,634.90 and 287,992.56 is: 397,103.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,554.83 : 622,634.90 = 287,992.56 : x
  2. Step 2: Convert to fraction form
    451,554.83/622,634.90 = 287,992.56/x
  3. Step 3: Cross multiply
    451,554.83x = 622,634.90 × 287,992.56
  4. Step 4: Simplify right side
    451,554.83x = 179,314,221,311.22
  5. Step 5: Solve for x
    x = 179,314,221,311.22/451,554.83
  6. Step 6: Final answer
    x = 397,103.99

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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.