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Finding the Fourth Proportional to 5,838.21, 8,760.02 and 2,918.43

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Solution

The fourth proportional to 5,838.21, 8,760.02 and 2,918.43 is: 4,378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,838.21 : 8,760.02 = 2,918.43 : x
  2. Step 2: Convert to fraction form
    5,838.21/8,760.02 = 2,918.43/x
  3. Step 3: Cross multiply
    5,838.21x = 8,760.02 × 2,918.43
  4. Step 4: Simplify right side
    5,838.21x = 25,565,490.58
  5. Step 5: Solve for x
    x = 25,565,490.58/5,838.21
  6. Step 6: Final answer
    x = 4,378.99

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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.