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Finding the Fourth Proportional to 18,365.85, 27,531.32 and 5,877.83

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Solution

The fourth proportional to 18,365.85, 27,531.32 and 5,877.83 is: 8,811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.85 : 27,531.32 = 5,877.83 : x
  2. Step 2: Convert to fraction form
    18,365.85/27,531.32 = 5,877.83/x
  3. Step 3: Cross multiply
    18,365.85x = 27,531.32 × 5,877.83
  4. Step 4: Simplify right side
    18,365.85x = 161,824,251.59
  5. Step 5: Solve for x
    x = 161,824,251.59/18,365.85
  6. Step 6: Final answer
    x = 8,811.15

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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.