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Finding the Fourth Proportional to 116,693.72, 161,037.99 and 66,392.72

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Solution

The fourth proportional to 116,693.72, 161,037.99 and 66,392.72 is: 91,622.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,693.72 : 161,037.99 = 66,392.72 : x
  2. Step 2: Convert to fraction form
    116,693.72/161,037.99 = 66,392.72/x
  3. Step 3: Cross multiply
    116,693.72x = 161,037.99 × 66,392.72
  4. Step 4: Simplify right side
    116,693.72x = 10,691,750,179.43
  5. Step 5: Solve for x
    x = 10,691,750,179.43/116,693.72
  6. Step 6: Final answer
    x = 91,622.33

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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.