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Finding the Fourth Proportional to 71,887.95, 107,879.92 and 25,140.83

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Solution

The fourth proportional to 71,887.95, 107,879.92 and 25,140.83 is: 37,728.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,887.95 : 107,879.92 = 25,140.83 : x
  2. Step 2: Convert to fraction form
    71,887.95/107,879.92 = 25,140.83/x
  3. Step 3: Cross multiply
    71,887.95x = 107,879.92 × 25,140.83
  4. Step 4: Simplify right side
    71,887.95x = 2,712,190,729.13
  5. Step 5: Solve for x
    x = 2,712,190,729.13/71,887.95
  6. Step 6: Final answer
    x = 37,728.03

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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.