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Finding the Fourth Proportional to 120,596.87, 166,419.46 and 66,886.88

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Solution

The fourth proportional to 120,596.87, 166,419.46 and 66,886.88 is: 92,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,596.87 : 166,419.46 = 66,886.88 : x
  2. Step 2: Convert to fraction form
    120,596.87/166,419.46 = 66,886.88/x
  3. Step 3: Cross multiply
    120,596.87x = 166,419.46 × 66,886.88
  4. Step 4: Simplify right side
    120,596.87x = 11,131,278,638.31
  5. Step 5: Solve for x
    x = 11,131,278,638.31/120,596.87
  6. Step 6: Final answer
    x = 92,301.56

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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.