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Finding the Fourth Proportional to 113,872.86, 170,791.70 and 38,975.80

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Solution

The fourth proportional to 113,872.86, 170,791.70 and 38,975.80 is: 58,457.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,872.86 : 170,791.70 = 38,975.80 : x
  2. Step 2: Convert to fraction form
    113,872.86/170,791.70 = 38,975.80/x
  3. Step 3: Cross multiply
    113,872.86x = 170,791.70 × 38,975.80
  4. Step 4: Simplify right side
    113,872.86x = 6,656,743,140.86
  5. Step 5: Solve for x
    x = 6,656,743,140.86/113,872.86
  6. Step 6: Final answer
    x = 58,457.68

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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.