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Finding the Fourth Proportional to 53,912.52, 80,813.70 and 18,823.32

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Solution

The fourth proportional to 53,912.52, 80,813.70 and 18,823.32 is: 28,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,912.52 : 80,813.70 = 18,823.32 : x
  2. Step 2: Convert to fraction form
    53,912.52/80,813.70 = 18,823.32/x
  3. Step 3: Cross multiply
    53,912.52x = 80,813.70 × 18,823.32
  4. Step 4: Simplify right side
    53,912.52x = 1,521,182,135.48
  5. Step 5: Solve for x
    x = 1,521,182,135.48/53,912.52
  6. Step 6: Final answer
    x = 28,215.75

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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.