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Finding the Fourth Proportional to 92,272.95, 138,360.21 and 47,789.37

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Solution

The fourth proportional to 92,272.95, 138,360.21 and 47,789.37 is: 71,658.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,272.95 : 138,360.21 = 47,789.37 : x
  2. Step 2: Convert to fraction form
    92,272.95/138,360.21 = 47,789.37/x
  3. Step 3: Cross multiply
    92,272.95x = 138,360.21 × 47,789.37
  4. Step 4: Simplify right side
    92,272.95x = 6,612,147,268.97
  5. Step 5: Solve for x
    x = 6,612,147,268.97/92,272.95
  6. Step 6: Final answer
    x = 71,658.57

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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.