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Finding the Fourth Proportional to 89,231.76, 133,669.17 and 53,673.45

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Solution

The fourth proportional to 89,231.76, 133,669.17 and 53,673.45 is: 80,402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,231.76 : 133,669.17 = 53,673.45 : x
  2. Step 2: Convert to fraction form
    89,231.76/133,669.17 = 53,673.45/x
  3. Step 3: Cross multiply
    89,231.76x = 133,669.17 × 53,673.45
  4. Step 4: Simplify right side
    89,231.76x = 7,174,485,512.54
  5. Step 5: Solve for x
    x = 7,174,485,512.54/89,231.76
  6. Step 6: Final answer
    x = 80,402.82

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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.