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Finding the Fourth Proportional to 3,314.69, 4,971.99 and 849.50

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Solution

The fourth proportional to 3,314.69, 4,971.99 and 849.50 is: 1,274.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,314.69 : 4,971.99 = 849.50 : x
  2. Step 2: Convert to fraction form
    3,314.69/4,971.99 = 849.50/x
  3. Step 3: Cross multiply
    3,314.69x = 4,971.99 × 849.50
  4. Step 4: Simplify right side
    3,314.69x = 4,223,680.65
  5. Step 5: Solve for x
    x = 4,223,680.65/3,314.69
  6. Step 6: Final answer
    x = 1,274.23

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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.