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Finding the Fourth Proportional to 5,286.65, 7,933.62 and 5,245.64

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Solution

The fourth proportional to 5,286.65, 7,933.62 and 5,245.64 is: 7,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.65 : 7,933.62 = 5,245.64 : x
  2. Step 2: Convert to fraction form
    5,286.65/7,933.62 = 5,245.64/x
  3. Step 3: Cross multiply
    5,286.65x = 7,933.62 × 5,245.64
  4. Step 4: Simplify right side
    5,286.65x = 41,616,888.19
  5. Step 5: Solve for x
    x = 41,616,888.19/5,286.65
  6. Step 6: Final answer
    x = 7,872.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.