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Finding the Fourth Proportional to 89,798.68, 123,916.56 and 49,512.88

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Solution

The fourth proportional to 89,798.68, 123,916.56 and 49,512.88 is: 68,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,798.68 : 123,916.56 = 49,512.88 : x
  2. Step 2: Convert to fraction form
    89,798.68/123,916.56 = 49,512.88/x
  3. Step 3: Cross multiply
    89,798.68x = 123,916.56 × 49,512.88
  4. Step 4: Simplify right side
    89,798.68x = 6,135,465,765.29
  5. Step 5: Solve for x
    x = 6,135,465,765.29/89,798.68
  6. Step 6: Final answer
    x = 68,324.68

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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.