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Finding the Fourth Proportional to 116,680.70, 161,019.96 and 66,379.70

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Solution

The fourth proportional to 116,680.70, 161,019.96 and 66,379.70 is: 91,604.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,680.70 : 161,019.96 = 66,379.70 : x
  2. Step 2: Convert to fraction form
    116,680.70/161,019.96 = 66,379.70/x
  3. Step 3: Cross multiply
    116,680.70x = 161,019.96 × 66,379.70
  4. Step 4: Simplify right side
    116,680.70x = 10,688,456,638.81
  5. Step 5: Solve for x
    x = 10,688,456,638.81/116,680.70
  6. Step 6: Final answer
    x = 91,604.32

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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.