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Finding the Fourth Proportional to 120,679.66, 166,535.43 and 66,964.24

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Solution

The fourth proportional to 120,679.66, 166,535.43 and 66,964.24 is: 92,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,679.66 : 166,535.43 = 66,964.24 : x
  2. Step 2: Convert to fraction form
    120,679.66/166,535.43 = 66,964.24/x
  3. Step 3: Cross multiply
    120,679.66x = 166,535.43 × 66,964.24
  4. Step 4: Simplify right side
    120,679.66x = 11,151,918,503.02
  5. Step 5: Solve for x
    x = 11,151,918,503.02/120,679.66
  6. Step 6: Final answer
    x = 92,409.26

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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.