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Finding the Fourth Proportional to 4,479.51, 6,674.25 and 4,228

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Solution

The fourth proportional to 4,479.51, 6,674.25 and 4,228 is: 6,299.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.51 : 6,674.25 = 4,228 : x
  2. Step 2: Convert to fraction form
    4,479.51/6,674.25 = 4,228/x
  3. Step 3: Cross multiply
    4,479.51x = 6,674.25 × 4,228
  4. Step 4: Simplify right side
    4,479.51x = 28,218,707.86
  5. Step 5: Solve for x
    x = 28,218,707.86/4,479.51
  6. Step 6: Final answer
    x = 6,299.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.