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Finding the Fourth Proportional to 86,188.11, 129,169.86 and 44,032.67

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Solution

The fourth proportional to 86,188.11, 129,169.86 and 44,032.67 is: 65,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,188.11 : 129,169.86 = 44,032.67 : x
  2. Step 2: Convert to fraction form
    86,188.11/129,169.86 = 44,032.67/x
  3. Step 3: Cross multiply
    86,188.11x = 129,169.86 × 44,032.67
  4. Step 4: Simplify right side
    86,188.11x = 5,687,693,173.48
  5. Step 5: Solve for x
    x = 5,687,693,173.48/86,188.11
  6. Step 6: Final answer
    x = 65,991.62

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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.