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Finding the Fourth Proportional to 65,808.83, 98,723.57 and 28,379.54

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Solution

The fourth proportional to 65,808.83, 98,723.57 and 28,379.54 is: 42,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,808.83 : 98,723.57 = 28,379.54 : x
  2. Step 2: Convert to fraction form
    65,808.83/98,723.57 = 28,379.54/x
  3. Step 3: Cross multiply
    65,808.83x = 98,723.57 × 28,379.54
  4. Step 4: Simplify right side
    65,808.83x = 2,801,729,238.46
  5. Step 5: Solve for x
    x = 2,801,729,238.46/65,808.83
  6. Step 6: Final answer
    x = 42,573.76

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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.