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Finding the Fourth Proportional to 125,874.42, 188,756.22 and 66,696.44

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Solution

The fourth proportional to 125,874.42, 188,756.22 and 66,696.44 is: 100,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,874.42 : 188,756.22 = 66,696.44 : x
  2. Step 2: Convert to fraction form
    125,874.42/188,756.22 = 66,696.44/x
  3. Step 3: Cross multiply
    125,874.42x = 188,756.22 × 66,696.44
  4. Step 4: Simplify right side
    125,874.42x = 12,589,367,901.86
  5. Step 5: Solve for x
    x = 12,589,367,901.86/125,874.42
  6. Step 6: Final answer
    x = 100,015.30

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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.