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Finding the Fourth Proportional to 18,408.29, 27,612.43 and 4,557.29

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Solution

The fourth proportional to 18,408.29, 27,612.43 and 4,557.29 is: 6,835.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.29 : 27,612.43 = 4,557.29 : x
  2. Step 2: Convert to fraction form
    18,408.29/27,612.43 = 4,557.29/x
  3. Step 3: Cross multiply
    18,408.29x = 27,612.43 × 4,557.29
  4. Step 4: Simplify right side
    18,408.29x = 125,837,851.11
  5. Step 5: Solve for x
    x = 125,837,851.11/18,408.29
  6. Step 6: Final answer
    x = 6,835.93

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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.