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Finding the Fourth Proportional to 18,435.76, 27,653.90 and 4,584.76

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Solution

The fourth proportional to 18,435.76, 27,653.90 and 4,584.76 is: 6,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,435.76 : 27,653.90 = 4,584.76 : x
  2. Step 2: Convert to fraction form
    18,435.76/27,653.90 = 4,584.76/x
  3. Step 3: Cross multiply
    18,435.76x = 27,653.90 × 4,584.76
  4. Step 4: Simplify right side
    18,435.76x = 126,786,494.56
  5. Step 5: Solve for x
    x = 126,786,494.56/18,435.76
  6. Step 6: Final answer
    x = 6,877.20

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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.