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Finding the Fourth Proportional to 117,178.33, 161,706.09 and 63,463.54

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Solution

The fourth proportional to 117,178.33, 161,706.09 and 63,463.54 is: 87,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,178.33 : 161,706.09 = 63,463.54 : x
  2. Step 2: Convert to fraction form
    117,178.33/161,706.09 = 63,463.54/x
  3. Step 3: Cross multiply
    117,178.33x = 161,706.09 × 63,463.54
  4. Step 4: Simplify right side
    117,178.33x = 10,262,440,910.96
  5. Step 5: Solve for x
    x = 10,262,440,910.96/117,178.33
  6. Step 6: Final answer
    x = 87,579.68

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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.