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Finding the Fourth Proportional to 1,967.56, 2,714.70 and 1,170.69

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Solution

The fourth proportional to 1,967.56, 2,714.70 and 1,170.69 is: 1,615.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,967.56 : 2,714.70 = 1,170.69 : x
  2. Step 2: Convert to fraction form
    1,967.56/2,714.70 = 1,170.69/x
  3. Step 3: Cross multiply
    1,967.56x = 2,714.70 × 1,170.69
  4. Step 4: Simplify right side
    1,967.56x = 3,178,072.14
  5. Step 5: Solve for x
    x = 3,178,072.14/1,967.56
  6. Step 6: Final answer
    x = 1,615.24

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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.