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Finding the Fourth Proportional to 126,732.84, 174,935.04 and 73,039.30

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Solution

The fourth proportional to 126,732.84, 174,935.04 and 73,039.30 is: 100,819.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,732.84 : 174,935.04 = 73,039.30 : x
  2. Step 2: Convert to fraction form
    126,732.84/174,935.04 = 73,039.30/x
  3. Step 3: Cross multiply
    126,732.84x = 174,935.04 × 73,039.30
  4. Step 4: Simplify right side
    126,732.84x = 12,777,132,867.07
  5. Step 5: Solve for x
    x = 12,777,132,867.07/126,732.84
  6. Step 6: Final answer
    x = 100,819.43

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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.