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Finding the Fourth Proportional to 68,876.34, 95,055.86 and 40,193.68

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Solution

The fourth proportional to 68,876.34, 95,055.86 and 40,193.68 is: 55,471.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,876.34 : 95,055.86 = 40,193.68 : x
  2. Step 2: Convert to fraction form
    68,876.34/95,055.86 = 40,193.68/x
  3. Step 3: Cross multiply
    68,876.34x = 95,055.86 × 40,193.68
  4. Step 4: Simplify right side
    68,876.34x = 3,820,644,818.96
  5. Step 5: Solve for x
    x = 3,820,644,818.96/68,876.34
  6. Step 6: Final answer
    x = 55,471.08

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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.