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Finding the Fourth Proportional to 84,712.56, 126,899.40 and 50,959.98

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Solution

The fourth proportional to 84,712.56, 126,899.40 and 50,959.98 is: 76,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,712.56 : 126,899.40 = 50,959.98 : x
  2. Step 2: Convert to fraction form
    84,712.56/126,899.40 = 50,959.98/x
  3. Step 3: Cross multiply
    84,712.56x = 126,899.40 × 50,959.98
  4. Step 4: Simplify right side
    84,712.56x = 6,466,790,886.01
  5. Step 5: Solve for x
    x = 6,466,790,886.01/84,712.56
  6. Step 6: Final answer
    x = 76,338.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.