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Finding the Fourth Proportional to 4,920.67, 7,366.38 and 4,914.19

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Solution

The fourth proportional to 4,920.67, 7,366.38 and 4,914.19 is: 7,356.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.67 : 7,366.38 = 4,914.19 : x
  2. Step 2: Convert to fraction form
    4,920.67/7,366.38 = 4,914.19/x
  3. Step 3: Cross multiply
    4,920.67x = 7,366.38 × 4,914.19
  4. Step 4: Simplify right side
    4,920.67x = 36,199,790.93
  5. Step 5: Solve for x
    x = 36,199,790.93/4,920.67
  6. Step 6: Final answer
    x = 7,356.68

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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.