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Finding the Fourth Proportional to 135,329.94, 186,742.46 and 91,633.48

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Solution

The fourth proportional to 135,329.94, 186,742.46 and 91,633.48 is: 126,445.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,329.94 : 186,742.46 = 91,633.48 : x
  2. Step 2: Convert to fraction form
    135,329.94/186,742.46 = 91,633.48/x
  3. Step 3: Cross multiply
    135,329.94x = 186,742.46 × 91,633.48
  4. Step 4: Simplify right side
    135,329.94x = 17,111,861,235.79
  5. Step 5: Solve for x
    x = 17,111,861,235.79/135,329.94
  6. Step 6: Final answer
    x = 126,445.49

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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.