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Finding the Fourth Proportional to 8,506.40, 11,736.94 and 5,361.44

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Solution

The fourth proportional to 8,506.40, 11,736.94 and 5,361.44 is: 7,397.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506.40 : 11,736.94 = 5,361.44 : x
  2. Step 2: Convert to fraction form
    8,506.40/11,736.94 = 5,361.44/x
  3. Step 3: Cross multiply
    8,506.40x = 11,736.94 × 5,361.44
  4. Step 4: Simplify right side
    8,506.40x = 62,926,899.59
  5. Step 5: Solve for x
    x = 62,926,899.59/8,506.40
  6. Step 6: Final answer
    x = 7,397.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.