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Finding the Fourth Proportional to 68,612.64, 94,669.92 and 43,447.68

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Solution

The fourth proportional to 68,612.64, 94,669.92 and 43,447.68 is: 59,947.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,612.64 : 94,669.92 = 43,447.68 : x
  2. Step 2: Convert to fraction form
    68,612.64/94,669.92 = 43,447.68/x
  3. Step 3: Cross multiply
    68,612.64x = 94,669.92 × 43,447.68
  4. Step 4: Simplify right side
    68,612.64x = 4,113,188,389.79
  5. Step 5: Solve for x
    x = 4,113,188,389.79/68,612.64
  6. Step 6: Final answer
    x = 59,947.97

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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.