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Finding the Fourth Proportional to 76,375.72, 114,573.65 and 28,337.79

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Solution

The fourth proportional to 76,375.72, 114,573.65 and 28,337.79 is: 42,510.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,375.72 : 114,573.65 = 28,337.79 : x
  2. Step 2: Convert to fraction form
    76,375.72/114,573.65 = 28,337.79/x
  3. Step 3: Cross multiply
    76,375.72x = 114,573.65 × 28,337.79
  4. Step 4: Simplify right side
    76,375.72x = 3,246,764,321.20
  5. Step 5: Solve for x
    x = 3,246,764,321.20/76,375.72
  6. Step 6: Final answer
    x = 42,510.42

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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.