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Finding the Fourth Proportional to 117,695.80, 176,543.70 and 115,946.20

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Solution

The fourth proportional to 117,695.80, 176,543.70 and 115,946.20 is: 173,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,695.80 : 176,543.70 = 115,946.20 : x
  2. Step 2: Convert to fraction form
    117,695.80/176,543.70 = 115,946.20/x
  3. Step 3: Cross multiply
    117,695.80x = 176,543.70 × 115,946.20
  4. Step 4: Simplify right side
    117,695.80x = 20,469,571,148.94
  5. Step 5: Solve for x
    x = 20,469,571,148.94/117,695.80
  6. Step 6: Final answer
    x = 173,919.30

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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.