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Finding the Fourth Proportional to 86,967.43, 120,027.74 and 48,729.56

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Solution

The fourth proportional to 86,967.43, 120,027.74 and 48,729.56 is: 67,253.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,967.43 : 120,027.74 = 48,729.56 : x
  2. Step 2: Convert to fraction form
    86,967.43/120,027.74 = 48,729.56/x
  3. Step 3: Cross multiply
    86,967.43x = 120,027.74 × 48,729.56
  4. Step 4: Simplify right side
    86,967.43x = 5,848,898,714.35
  5. Step 5: Solve for x
    x = 5,848,898,714.35/86,967.43
  6. Step 6: Final answer
    x = 67,253.90

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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.