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Finding the Fourth Proportional to 53,848.50, 80,785.80 and 16,912.50

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Solution

The fourth proportional to 53,848.50, 80,785.80 and 16,912.50 is: 25,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,848.50 : 80,785.80 = 16,912.50 : x
  2. Step 2: Convert to fraction form
    53,848.50/80,785.80 = 16,912.50/x
  3. Step 3: Cross multiply
    53,848.50x = 80,785.80 × 16,912.50
  4. Step 4: Simplify right side
    53,848.50x = 1,366,289,842.50
  5. Step 5: Solve for x
    x = 1,366,289,842.50/53,848.50
  6. Step 6: Final answer
    x = 25,372.85

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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.