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Finding the Fourth Proportional to 85,662.95, 118,268.49 and 55,048.46

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Solution

The fourth proportional to 85,662.95, 118,268.49 and 55,048.46 is: 76,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,662.95 : 118,268.49 = 55,048.46 : x
  2. Step 2: Convert to fraction form
    85,662.95/118,268.49 = 55,048.46/x
  3. Step 3: Cross multiply
    85,662.95x = 118,268.49 × 55,048.46
  4. Step 4: Simplify right side
    85,662.95x = 6,510,498,241.03
  5. Step 5: Solve for x
    x = 6,510,498,241.03/85,662.95
  6. Step 6: Final answer
    x = 76,001.33

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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.