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Finding the Fourth Proportional to 85,954.56, 118,619.32 and 48,231.60

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Solution

The fourth proportional to 85,954.56, 118,619.32 and 48,231.60 is: 66,560.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954.56 : 118,619.32 = 48,231.60 : x
  2. Step 2: Convert to fraction form
    85,954.56/118,619.32 = 48,231.60/x
  3. Step 3: Cross multiply
    85,954.56x = 118,619.32 × 48,231.60
  4. Step 4: Simplify right side
    85,954.56x = 5,721,199,594.51
  5. Step 5: Solve for x
    x = 5,721,199,594.51/85,954.56
  6. Step 6: Final answer
    x = 66,560.75

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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.