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Finding the Fourth Proportional to 88,993.72, 133,486.38 and 25,811.92

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Solution

The fourth proportional to 88,993.72, 133,486.38 and 25,811.92 is: 38,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,993.72 : 133,486.38 = 25,811.92 : x
  2. Step 2: Convert to fraction form
    88,993.72/133,486.38 = 25,811.92/x
  3. Step 3: Cross multiply
    88,993.72x = 133,486.38 × 25,811.92
  4. Step 4: Simplify right side
    88,993.72x = 3,445,539,761.65
  5. Step 5: Solve for x
    x = 3,445,539,761.65/88,993.72
  6. Step 6: Final answer
    x = 38,716.66

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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.