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Finding the Fourth Proportional to 71,860.72, 99,170.04 and 41,239.41

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Solution

The fourth proportional to 71,860.72, 99,170.04 and 41,239.41 is: 56,911.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,860.72 : 99,170.04 = 41,239.41 : x
  2. Step 2: Convert to fraction form
    71,860.72/99,170.04 = 41,239.41/x
  3. Step 3: Cross multiply
    71,860.72x = 99,170.04 × 41,239.41
  4. Step 4: Simplify right side
    71,860.72x = 4,089,713,939.28
  5. Step 5: Solve for x
    x = 4,089,713,939.28/71,860.72
  6. Step 6: Final answer
    x = 56,911.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.