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Finding the Fourth Proportional to 318,393.44, 439,584.63 and 197,662.84

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Solution

The fourth proportional to 318,393.44, 439,584.63 and 197,662.84 is: 272,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,393.44 : 439,584.63 = 197,662.84 : x
  2. Step 2: Convert to fraction form
    318,393.44/439,584.63 = 197,662.84/x
  3. Step 3: Cross multiply
    318,393.44x = 439,584.63 × 197,662.84
  4. Step 4: Simplify right side
    318,393.44x = 86,889,544,833.58
  5. Step 5: Solve for x
    x = 86,889,544,833.58/318,393.44
  6. Step 6: Final answer
    x = 272,899.92

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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.