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Finding the Fourth Proportional to 117,763.20, 176,385.60 and 70,934.40

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Solution

The fourth proportional to 117,763.20, 176,385.60 and 70,934.40 is: 106,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,763.20 : 176,385.60 = 70,934.40 : x
  2. Step 2: Convert to fraction form
    117,763.20/176,385.60 = 70,934.40/x
  3. Step 3: Cross multiply
    117,763.20x = 176,385.60 × 70,934.40
  4. Step 4: Simplify right side
    117,763.20x = 12,511,806,704.64
  5. Step 5: Solve for x
    x = 12,511,806,704.64/117,763.20
  6. Step 6: Final answer
    x = 106,245.47

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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.