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Finding the Fourth Proportional to 92,108.81, 127,338.45 and 91,268.03

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Solution

The fourth proportional to 92,108.81, 127,338.45 and 91,268.03 is: 126,176.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,108.81 : 127,338.45 = 91,268.03 : x
  2. Step 2: Convert to fraction form
    92,108.81/127,338.45 = 91,268.03/x
  3. Step 3: Cross multiply
    92,108.81x = 127,338.45 × 91,268.03
  4. Step 4: Simplify right side
    92,108.81x = 11,621,929,474.75
  5. Step 5: Solve for x
    x = 11,621,929,474.75/92,108.81
  6. Step 6: Final answer
    x = 126,176.09

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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.