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Finding the Fourth Proportional to 3,663.76, 5,055.78 and 2,092

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Solution

The fourth proportional to 3,663.76, 5,055.78 and 2,092 is: 2,886.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,663.76 : 5,055.78 = 2,092 : x
  2. Step 2: Convert to fraction form
    3,663.76/5,055.78 = 2,092/x
  3. Step 3: Cross multiply
    3,663.76x = 5,055.78 × 2,092
  4. Step 4: Simplify right side
    3,663.76x = 10,576,691.76
  5. Step 5: Solve for x
    x = 10,576,691.76/3,663.76
  6. Step 6: Final answer
    x = 2,886.84

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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.