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Finding the Fourth Proportional to 395,514.75, 545,843.91 and 223,464.34

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Solution

The fourth proportional to 395,514.75, 545,843.91 and 223,464.34 is: 308,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,514.75 : 545,843.91 = 223,464.34 : x
  2. Step 2: Convert to fraction form
    395,514.75/545,843.91 = 223,464.34/x
  3. Step 3: Cross multiply
    395,514.75x = 545,843.91 × 223,464.34
  4. Step 4: Simplify right side
    395,514.75x = 121,976,649,091.17
  5. Step 5: Solve for x
    x = 121,976,649,091.17/395,514.75
  6. Step 6: Final answer
    x = 308,399.75

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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.