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Finding the Fourth Proportional to 72,994.11, 100,731.96 and 42,773.42

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Solution

The fourth proportional to 72,994.11, 100,731.96 and 42,773.42 is: 59,027.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,994.11 : 100,731.96 = 42,773.42 : x
  2. Step 2: Convert to fraction form
    72,994.11/100,731.96 = 42,773.42/x
  3. Step 3: Cross multiply
    72,994.11x = 100,731.96 × 42,773.42
  4. Step 4: Simplify right side
    72,994.11x = 4,308,649,714.98
  5. Step 5: Solve for x
    x = 4,308,649,714.98/72,994.11
  6. Step 6: Final answer
    x = 59,027.36

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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.