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Finding the Fourth Proportional to 173,605.72, 260,410.74 and 55,276.60

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Solution

The fourth proportional to 173,605.72, 260,410.74 and 55,276.60 is: 82,915.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,605.72 : 260,410.74 = 55,276.60 : x
  2. Step 2: Convert to fraction form
    173,605.72/260,410.74 = 55,276.60/x
  3. Step 3: Cross multiply
    173,605.72x = 260,410.74 × 55,276.60
  4. Step 4: Simplify right side
    173,605.72x = 14,394,620,310.68
  5. Step 5: Solve for x
    x = 14,394,620,310.68/173,605.72
  6. Step 6: Final answer
    x = 82,915.59

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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.