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Finding the Fourth Proportional to 117,636.60, 176,195.70 and 82,385.40

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Solution

The fourth proportional to 117,636.60, 176,195.70 and 82,385.40 is: 123,396.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,636.60 : 176,195.70 = 82,385.40 : x
  2. Step 2: Convert to fraction form
    117,636.60/176,195.70 = 82,385.40/x
  3. Step 3: Cross multiply
    117,636.60x = 176,195.70 × 82,385.40
  4. Step 4: Simplify right side
    117,636.60x = 14,515,953,222.78
  5. Step 5: Solve for x
    x = 14,515,953,222.78/117,636.60
  6. Step 6: Final answer
    x = 123,396.57

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1.5x scale

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.