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Finding the Fourth Proportional to 111,828.62, 167,679.39 and 76,332.90

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Solution

The fourth proportional to 111,828.62, 167,679.39 and 76,332.90 is: 114,455.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,828.62 : 167,679.39 = 76,332.90 : x
  2. Step 2: Convert to fraction form
    111,828.62/167,679.39 = 76,332.90/x
  3. Step 3: Cross multiply
    111,828.62x = 167,679.39 × 76,332.90
  4. Step 4: Simplify right side
    111,828.62x = 12,799,454,251.46
  5. Step 5: Solve for x
    x = 12,799,454,251.46/111,828.62
  6. Step 6: Final answer
    x = 114,455.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.