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Finding the Fourth Proportional to 86,207.55, 118,965.27 and 48,481.80

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Solution

The fourth proportional to 86,207.55, 118,965.27 and 48,481.80 is: 66,904.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,207.55 : 118,965.27 = 48,481.80 : x
  2. Step 2: Convert to fraction form
    86,207.55/118,965.27 = 48,481.80/x
  3. Step 3: Cross multiply
    86,207.55x = 118,965.27 × 48,481.80
  4. Step 4: Simplify right side
    86,207.55x = 5,767,650,427.09
  5. Step 5: Solve for x
    x = 5,767,650,427.09/86,207.55
  6. Step 6: Final answer
    x = 66,904.24

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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.