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Finding the Fourth Proportional to 126,912.78, 175,093.28 and 75,926.97

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Solution

The fourth proportional to 126,912.78, 175,093.28 and 75,926.97 is: 104,751.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.78 : 175,093.28 = 75,926.97 : x
  2. Step 2: Convert to fraction form
    126,912.78/175,093.28 = 75,926.97/x
  3. Step 3: Cross multiply
    126,912.78x = 175,093.28 × 75,926.97
  4. Step 4: Simplify right side
    126,912.78x = 13,294,302,217.76
  5. Step 5: Solve for x
    x = 13,294,302,217.76/126,912.78
  6. Step 6: Final answer
    x = 104,751.49

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1.5x scale

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.