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Finding the Fourth Proportional to 505,215.44, 697,193.52 and 278,860.88

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Solution

The fourth proportional to 505,215.44, 697,193.52 and 278,860.88 is: 384,825.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,215.44 : 697,193.52 = 278,860.88 : x
  2. Step 2: Convert to fraction form
    505,215.44/697,193.52 = 278,860.88/x
  3. Step 3: Cross multiply
    505,215.44x = 697,193.52 × 278,860.88
  4. Step 4: Simplify right side
    505,215.44x = 194,419,998,517.50
  5. Step 5: Solve for x
    x = 194,419,998,517.50/505,215.44
  6. Step 6: Final answer
    x = 384,825.92

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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.