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Finding the Fourth Proportional to 68,495.31, 102,690.09 and 43,483.32

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Solution

The fourth proportional to 68,495.31, 102,690.09 and 43,483.32 is: 65,191.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,495.31 : 102,690.09 = 43,483.32 : x
  2. Step 2: Convert to fraction form
    68,495.31/102,690.09 = 43,483.32/x
  3. Step 3: Cross multiply
    68,495.31x = 102,690.09 × 43,483.32
  4. Step 4: Simplify right side
    68,495.31x = 4,465,306,044.30
  5. Step 5: Solve for x
    x = 4,465,306,044.30/68,495.31
  6. Step 6: Final answer
    x = 65,191.41

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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.