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Finding the Fourth Proportional to 3,368.61, 5,053.23 and 1,393.83

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Solution

The fourth proportional to 3,368.61, 5,053.23 and 1,393.83 is: 2,090.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.61 : 5,053.23 = 1,393.83 : x
  2. Step 2: Convert to fraction form
    3,368.61/5,053.23 = 1,393.83/x
  3. Step 3: Cross multiply
    3,368.61x = 5,053.23 × 1,393.83
  4. Step 4: Simplify right side
    3,368.61x = 7,043,343.57
  5. Step 5: Solve for x
    x = 7,043,343.57/3,368.61
  6. Step 6: Final answer
    x = 2,090.88

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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.