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Finding the Fourth Proportional to 68,566.20, 103,022.10 and 43,618.20

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Solution

The fourth proportional to 68,566.20, 103,022.10 and 43,618.20 is: 65,537.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,566.20 : 103,022.10 = 43,618.20 : x
  2. Step 2: Convert to fraction form
    68,566.20/103,022.10 = 43,618.20/x
  3. Step 3: Cross multiply
    68,566.20x = 103,022.10 × 43,618.20
  4. Step 4: Simplify right side
    68,566.20x = 4,493,638,562.22
  5. Step 5: Solve for x
    x = 4,493,638,562.22/68,566.20
  6. Step 6: Final answer
    x = 65,537.23

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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.