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Finding the Fourth Proportional to 139,597.42, 192,645.94 and 75,935.38

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Solution

The fourth proportional to 139,597.42, 192,645.94 and 75,935.38 is: 104,791.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,597.42 : 192,645.94 = 75,935.38 : x
  2. Step 2: Convert to fraction form
    139,597.42/192,645.94 = 75,935.38/x
  3. Step 3: Cross multiply
    139,597.42x = 192,645.94 × 75,935.38
  4. Step 4: Simplify right side
    139,597.42x = 14,628,642,659.36
  5. Step 5: Solve for x
    x = 14,628,642,659.36/139,597.42
  6. Step 6: Final answer
    x = 104,791.64

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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.