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Finding the Fourth Proportional to 111,838.20, 167,708.70 and 36,929.40

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Solution

The fourth proportional to 111,838.20, 167,708.70 and 36,929.40 is: 55,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,838.20 : 167,708.70 = 36,929.40 : x
  2. Step 2: Convert to fraction form
    111,838.20/167,708.70 = 36,929.40/x
  3. Step 3: Cross multiply
    111,838.20x = 167,708.70 × 36,929.40
  4. Step 4: Simplify right side
    111,838.20x = 6,193,381,665.78
  5. Step 5: Solve for x
    x = 6,193,381,665.78/111,838.20
  6. Step 6: Final answer
    x = 55,378.05

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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.