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Finding the Fourth Proportional to 116,169.12, 160,311.96 and 65,864.88

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Solution

The fourth proportional to 116,169.12, 160,311.96 and 65,864.88 is: 90,892.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,169.12 : 160,311.96 = 65,864.88 : x
  2. Step 2: Convert to fraction form
    116,169.12/160,311.96 = 65,864.88/x
  3. Step 3: Cross multiply
    116,169.12x = 160,311.96 × 65,864.88
  4. Step 4: Simplify right side
    116,169.12x = 10,558,928,007.96
  5. Step 5: Solve for x
    x = 10,558,928,007.96/116,169.12
  6. Step 6: Final answer
    x = 90,892.73

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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.