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Finding the Fourth Proportional to 117,951.20, 176,926.80 and 112,119.20

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Solution

The fourth proportional to 117,951.20, 176,926.80 and 112,119.20 is: 168,178.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,951.20 : 176,926.80 = 112,119.20 : x
  2. Step 2: Convert to fraction form
    117,951.20/176,926.80 = 112,119.20/x
  3. Step 3: Cross multiply
    117,951.20x = 176,926.80 × 112,119.20
  4. Step 4: Simplify right side
    117,951.20x = 19,836,891,274.56
  5. Step 5: Solve for x
    x = 19,836,891,274.56/117,951.20
  6. Step 6: Final answer
    x = 168,178.80

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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.