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Finding the Fourth Proportional to 117,015.96, 161,481.54 and 63,300.85

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Solution

The fourth proportional to 117,015.96, 161,481.54 and 63,300.85 is: 87,354.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,015.96 : 161,481.54 = 63,300.85 : x
  2. Step 2: Convert to fraction form
    117,015.96/161,481.54 = 63,300.85/x
  3. Step 3: Cross multiply
    117,015.96x = 161,481.54 × 63,300.85
  4. Step 4: Simplify right side
    117,015.96x = 10,221,918,574.98
  5. Step 5: Solve for x
    x = 10,221,918,574.98/117,015.96
  6. Step 6: Final answer
    x = 87,354.91

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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.