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Finding the Fourth Proportional to 3,314.78, 4,972.26 and 849.62

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Solution

The fourth proportional to 3,314.78, 4,972.26 and 849.62 is: 1,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,314.78 : 4,972.26 = 849.62 : x
  2. Step 2: Convert to fraction form
    3,314.78/4,972.26 = 849.62/x
  3. Step 3: Cross multiply
    3,314.78x = 4,972.26 × 849.62
  4. Step 4: Simplify right side
    3,314.78x = 4,224,506.68
  5. Step 5: Solve for x
    x = 4,224,506.68/3,314.78
  6. Step 6: Final answer
    x = 1,274.45

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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.