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Finding the Fourth Proportional to 318,884.25, 440,028.32 and 196,356.98

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Solution

The fourth proportional to 318,884.25, 440,028.32 and 196,356.98 is: 270,952.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,884.25 : 440,028.32 = 196,356.98 : x
  2. Step 2: Convert to fraction form
    318,884.25/440,028.32 = 196,356.98/x
  3. Step 3: Cross multiply
    318,884.25x = 440,028.32 × 196,356.98
  4. Step 4: Simplify right side
    318,884.25x = 86,402,633,620.64
  5. Step 5: Solve for x
    x = 86,402,633,620.64/318,884.25
  6. Step 6: Final answer
    x = 270,952.97

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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.