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Finding the Fourth Proportional to 86,245.72, 118,979.76 and 62,334.52

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Solution

The fourth proportional to 86,245.72, 118,979.76 and 62,334.52 is: 85,993.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,245.72 : 118,979.76 = 62,334.52 : x
  2. Step 2: Convert to fraction form
    86,245.72/118,979.76 = 62,334.52/x
  3. Step 3: Cross multiply
    86,245.72x = 118,979.76 × 62,334.52
  4. Step 4: Simplify right side
    86,245.72x = 7,416,546,229.32
  5. Step 5: Solve for x
    x = 7,416,546,229.32/86,245.72
  6. Step 6: Final answer
    x = 85,993.21

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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.