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Finding the Fourth Proportional to 72,806.88, 109,221.84 and 26,058.72

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Solution

The fourth proportional to 72,806.88, 109,221.84 and 26,058.72 is: 39,092.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,806.88 : 109,221.84 = 26,058.72 : x
  2. Step 2: Convert to fraction form
    72,806.88/109,221.84 = 26,058.72/x
  3. Step 3: Cross multiply
    72,806.88x = 109,221.84 × 26,058.72
  4. Step 4: Simplify right side
    72,806.88x = 2,846,181,346.44
  5. Step 5: Solve for x
    x = 2,846,181,346.44/72,806.88
  6. Step 6: Final answer
    x = 39,092.20

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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.