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Finding the Fourth Proportional to 116,678.70, 161,017.20 and 66,377.70

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Solution

The fourth proportional to 116,678.70, 161,017.20 and 66,377.70 is: 91,601.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,678.70 : 161,017.20 = 66,377.70 : x
  2. Step 2: Convert to fraction form
    116,678.70/161,017.20 = 66,377.70/x
  3. Step 3: Cross multiply
    116,678.70x = 161,017.20 × 66,377.70
  4. Step 4: Simplify right side
    116,678.70x = 10,687,951,396.44
  5. Step 5: Solve for x
    x = 10,687,951,396.44/116,678.70
  6. Step 6: Final answer
    x = 91,601.56

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1.5x scale

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.