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Finding the Fourth Proportional to 111,084.88, 153,137.64 and 79,198.44

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Solution

The fourth proportional to 111,084.88, 153,137.64 and 79,198.44 is: 109,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,084.88 : 153,137.64 = 79,198.44 : x
  2. Step 2: Convert to fraction form
    111,084.88/153,137.64 = 79,198.44/x
  3. Step 3: Cross multiply
    111,084.88x = 153,137.64 × 79,198.44
  4. Step 4: Simplify right side
    111,084.88x = 12,128,262,193.28
  5. Step 5: Solve for x
    x = 12,128,262,193.28/111,084.88
  6. Step 6: Final answer
    x = 109,180.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.