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Finding the Fourth Proportional to 104,665.60, 156,949.80 and 45,470.80

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Solution

The fourth proportional to 104,665.60, 156,949.80 and 45,470.80 is: 68,185.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,665.60 : 156,949.80 = 45,470.80 : x
  2. Step 2: Convert to fraction form
    104,665.60/156,949.80 = 45,470.80/x
  3. Step 3: Cross multiply
    104,665.60x = 156,949.80 × 45,470.80
  4. Step 4: Simplify right side
    104,665.60x = 7,136,632,965.84
  5. Step 5: Solve for x
    x = 7,136,632,965.84/104,665.60
  6. Step 6: Final answer
    x = 68,185.09

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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.