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Finding the Fourth Proportional to 18,426.48, 27,639.72 and 4,575.48

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Solution

The fourth proportional to 18,426.48, 27,639.72 and 4,575.48 is: 6,863.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.48 : 27,639.72 = 4,575.48 : x
  2. Step 2: Convert to fraction form
    18,426.48/27,639.72 = 4,575.48/x
  3. Step 3: Cross multiply
    18,426.48x = 27,639.72 × 4,575.48
  4. Step 4: Simplify right side
    18,426.48x = 126,464,986.07
  5. Step 5: Solve for x
    x = 126,464,986.07/18,426.48
  6. Step 6: Final answer
    x = 6,863.22

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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.