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Finding the Fourth Proportional to 69,821.76, 104,693.44 and 61,520.64

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Solution

The fourth proportional to 69,821.76, 104,693.44 and 61,520.64 is: 92,246.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,821.76 : 104,693.44 = 61,520.64 : x
  2. Step 2: Convert to fraction form
    69,821.76/104,693.44 = 61,520.64/x
  3. Step 3: Cross multiply
    69,821.76x = 104,693.44 × 61,520.64
  4. Step 4: Simplify right side
    69,821.76x = 6,440,807,432.60
  5. Step 5: Solve for x
    x = 6,440,807,432.60/69,821.76
  6. Step 6: Final answer
    x = 92,246.42

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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.