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Finding the Fourth Proportional to 116,608.88, 160,905.48 and 66,308.96

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Solution

The fourth proportional to 116,608.88, 160,905.48 and 66,308.96 is: 91,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,608.88 : 160,905.48 = 66,308.96 : x
  2. Step 2: Convert to fraction form
    116,608.88/160,905.48 = 66,308.96/x
  3. Step 3: Cross multiply
    116,608.88x = 160,905.48 × 66,308.96
  4. Step 4: Simplify right side
    116,608.88x = 10,669,475,037.10
  5. Step 5: Solve for x
    x = 10,669,475,037.10/116,608.88
  6. Step 6: Final answer
    x = 91,497.96

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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.