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Finding the Fourth Proportional to 136,874.22, 188,881.11 and 85,914.33

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Solution

The fourth proportional to 136,874.22, 188,881.11 and 85,914.33 is: 118,558.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,874.22 : 188,881.11 = 85,914.33 : x
  2. Step 2: Convert to fraction form
    136,874.22/188,881.11 = 85,914.33/x
  3. Step 3: Cross multiply
    136,874.22x = 188,881.11 × 85,914.33
  4. Step 4: Simplify right side
    136,874.22x = 16,227,594,015.31
  5. Step 5: Solve for x
    x = 16,227,594,015.31/136,874.22
  6. Step 6: Final answer
    x = 118,558.44

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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.