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Finding the Fourth Proportional to 117,946.60, 176,660.70 and 104,813.80

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Solution

The fourth proportional to 117,946.60, 176,660.70 and 104,813.80 is: 156,990.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,946.60 : 176,660.70 = 104,813.80 : x
  2. Step 2: Convert to fraction form
    117,946.60/176,660.70 = 104,813.80/x
  3. Step 3: Cross multiply
    117,946.60x = 176,660.70 × 104,813.80
  4. Step 4: Simplify right side
    117,946.60x = 18,516,479,277.66
  5. Step 5: Solve for x
    x = 18,516,479,277.66/117,946.60
  6. Step 6: Final answer
    x = 156,990.36

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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.