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Finding the Fourth Proportional to 173,619.20, 260,457.60 and 68,441.60

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Solution

The fourth proportional to 173,619.20, 260,457.60 and 68,441.60 is: 102,673.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,619.20 : 260,457.60 = 68,441.60 : x
  2. Step 2: Convert to fraction form
    173,619.20/260,457.60 = 68,441.60/x
  3. Step 3: Cross multiply
    173,619.20x = 260,457.60 × 68,441.60
  4. Step 4: Simplify right side
    173,619.20x = 17,826,134,876.16
  5. Step 5: Solve for x
    x = 17,826,134,876.16/173,619.20
  6. Step 6: Final answer
    x = 102,673.75

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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.