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Finding the Fourth Proportional to 53,693.92, 80,540.88 and 18,633.60

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Solution

The fourth proportional to 53,693.92, 80,540.88 and 18,633.60 is: 27,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,693.92 : 80,540.88 = 18,633.60 : x
  2. Step 2: Convert to fraction form
    53,693.92/80,540.88 = 18,633.60/x
  3. Step 3: Cross multiply
    53,693.92x = 80,540.88 × 18,633.60
  4. Step 4: Simplify right side
    53,693.92x = 1,500,766,541.57
  5. Step 5: Solve for x
    x = 1,500,766,541.57/53,693.92
  6. Step 6: Final answer
    x = 27,950.40

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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.