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Finding the Fourth Proportional to 68,406.48, 102,625.53 and 21,659.36

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Solution

The fourth proportional to 68,406.48, 102,625.53 and 21,659.36 is: 32,494.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,406.48 : 102,625.53 = 21,659.36 : x
  2. Step 2: Convert to fraction form
    68,406.48/102,625.53 = 21,659.36/x
  3. Step 3: Cross multiply
    68,406.48x = 102,625.53 × 21,659.36
  4. Step 4: Simplify right side
    68,406.48x = 2,222,803,042.90
  5. Step 5: Solve for x
    x = 2,222,803,042.90/68,406.48
  6. Step 6: Final answer
    x = 32,494.04

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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.