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Finding the Fourth Proportional to 11,758.72, 17,636.16 and 4,361.44

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Solution

The fourth proportional to 11,758.72, 17,636.16 and 4,361.44 is: 6,541.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,758.72 : 17,636.16 = 4,361.44 : x
  2. Step 2: Convert to fraction form
    11,758.72/17,636.16 = 4,361.44/x
  3. Step 3: Cross multiply
    11,758.72x = 17,636.16 × 4,361.44
  4. Step 4: Simplify right side
    11,758.72x = 76,919,053.67
  5. Step 5: Solve for x
    x = 76,919,053.67/11,758.72
  6. Step 6: Final answer
    x = 6,541.45

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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.