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Finding the Fourth Proportional to 116,976.87, 161,428.57 and 63,261.89

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Solution

The fourth proportional to 116,976.87, 161,428.57 and 63,261.89 is: 87,301.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,976.87 : 161,428.57 = 63,261.89 : x
  2. Step 2: Convert to fraction form
    116,976.87/161,428.57 = 63,261.89/x
  3. Step 3: Cross multiply
    116,976.87x = 161,428.57 × 63,261.89
  4. Step 4: Simplify right side
    116,976.87x = 10,212,275,876.47
  5. Step 5: Solve for x
    x = 10,212,275,876.47/116,976.87
  6. Step 6: Final answer
    x = 87,301.67

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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.