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Finding the Fourth Proportional to 76,046.96, 114,060.70 and 31,665.44

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Solution

The fourth proportional to 76,046.96, 114,060.70 and 31,665.44 is: 47,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,046.96 : 114,060.70 = 31,665.44 : x
  2. Step 2: Convert to fraction form
    76,046.96/114,060.70 = 31,665.44/x
  3. Step 3: Cross multiply
    76,046.96x = 114,060.70 × 31,665.44
  4. Step 4: Simplify right side
    76,046.96x = 3,611,782,252.21
  5. Step 5: Solve for x
    x = 3,611,782,252.21/76,046.96
  6. Step 6: Final answer
    x = 47,494.10

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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.