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Finding the Fourth Proportional to 111,412.35, 166,861.08 and 66,941.07

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Solution

The fourth proportional to 111,412.35, 166,861.08 and 66,941.07 is: 100,256.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,412.35 : 166,861.08 = 66,941.07 : x
  2. Step 2: Convert to fraction form
    111,412.35/166,861.08 = 66,941.07/x
  3. Step 3: Cross multiply
    111,412.35x = 166,861.08 × 66,941.07
  4. Step 4: Simplify right side
    111,412.35x = 11,169,859,236.56
  5. Step 5: Solve for x
    x = 11,169,859,236.56/111,412.35
  6. Step 6: Final answer
    x = 100,256.92

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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.