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Finding the Fourth Proportional to 60,331.11, 90,509.67 and 18,207.67

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Solution

The fourth proportional to 60,331.11, 90,509.67 and 18,207.67 is: 27,315.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,331.11 : 90,509.67 = 18,207.67 : x
  2. Step 2: Convert to fraction form
    60,331.11/90,509.67 = 18,207.67/x
  3. Step 3: Cross multiply
    60,331.11x = 90,509.67 × 18,207.67
  4. Step 4: Simplify right side
    60,331.11x = 1,647,969,659.58
  5. Step 5: Solve for x
    x = 1,647,969,659.58/60,331.11
  6. Step 6: Final answer
    x = 27,315.42

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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.