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Finding the Fourth Proportional to 104,068.52, 143,676.42 and 68,321.06

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Solution

The fourth proportional to 104,068.52, 143,676.42 and 68,321.06 is: 94,323.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,068.52 : 143,676.42 = 68,321.06 : x
  2. Step 2: Convert to fraction form
    104,068.52/143,676.42 = 68,321.06/x
  3. Step 3: Cross multiply
    104,068.52x = 143,676.42 × 68,321.06
  4. Step 4: Simplify right side
    104,068.52x = 9,816,125,311.41
  5. Step 5: Solve for x
    x = 9,816,125,311.41/104,068.52
  6. Step 6: Final answer
    x = 94,323.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.