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Finding the Fourth Proportional to 3,761.74, 5,643.15 and 1,164.88

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Solution

The fourth proportional to 3,761.74, 5,643.15 and 1,164.88 is: 1,747.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.74 : 5,643.15 = 1,164.88 : x
  2. Step 2: Convert to fraction form
    3,761.74/5,643.15 = 1,164.88/x
  3. Step 3: Cross multiply
    3,761.74x = 5,643.15 × 1,164.88
  4. Step 4: Simplify right side
    3,761.74x = 6,573,592.57
  5. Step 5: Solve for x
    x = 6,573,592.57/3,761.74
  6. Step 6: Final answer
    x = 1,747.49

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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.