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Finding the Fourth Proportional to 136,090.93, 187,791.21 and 75,651.82

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Solution

The fourth proportional to 136,090.93, 187,791.21 and 75,651.82 is: 104,391.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,090.93 : 187,791.21 = 75,651.82 : x
  2. Step 2: Convert to fraction form
    136,090.93/187,791.21 = 75,651.82/x
  3. Step 3: Cross multiply
    136,090.93x = 187,791.21 × 75,651.82
  4. Step 4: Simplify right side
    136,090.93x = 14,206,746,347.02
  5. Step 5: Solve for x
    x = 14,206,746,347.02/136,090.93
  6. Step 6: Final answer
    x = 104,391.58

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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.