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Finding the Fourth Proportional to 86,191.80, 118,958.83 and 50,374.81

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Solution

The fourth proportional to 86,191.80, 118,958.83 and 50,374.81 is: 69,525.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,191.80 : 118,958.83 = 50,374.81 : x
  2. Step 2: Convert to fraction form
    86,191.80/118,958.83 = 50,374.81/x
  3. Step 3: Cross multiply
    86,191.80x = 118,958.83 × 50,374.81
  4. Step 4: Simplify right side
    86,191.80x = 5,992,528,481.83
  5. Step 5: Solve for x
    x = 5,992,528,481.83/86,191.80
  6. Step 6: Final answer
    x = 69,525.51

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1.5x scale

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.