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Finding the Fourth Proportional to 439,144.21, 605,990.86 and 245,567.88

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Solution

The fourth proportional to 439,144.21, 605,990.86 and 245,567.88 is: 338,867.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,144.21 : 605,990.86 = 245,567.88 : x
  2. Step 2: Convert to fraction form
    439,144.21/605,990.86 = 245,567.88/x
  3. Step 3: Cross multiply
    439,144.21x = 605,990.86 × 245,567.88
  4. Step 4: Simplify right side
    439,144.21x = 148,811,890,789.58
  5. Step 5: Solve for x
    x = 148,811,890,789.58/439,144.21
  6. Step 6: Final answer
    x = 338,867.93

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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.