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Finding the Fourth Proportional to 116,750.70, 161,116.56 and 66,449.70

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Solution

The fourth proportional to 116,750.70, 161,116.56 and 66,449.70 is: 91,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,750.70 : 161,116.56 = 66,449.70 : x
  2. Step 2: Convert to fraction form
    116,750.70/161,116.56 = 66,449.70/x
  3. Step 3: Cross multiply
    116,750.70x = 161,116.56 × 66,449.70
  4. Step 4: Simplify right side
    116,750.70x = 10,706,147,077.03
  5. Step 5: Solve for x
    x = 10,706,147,077.03/116,750.70
  6. Step 6: Final answer
    x = 91,700.92

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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.