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Finding the Fourth Proportional to 120,561.68, 166,374.30 and 66,846.72

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Solution

The fourth proportional to 120,561.68, 166,374.30 and 66,846.72 is: 92,248.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,561.68 : 166,374.30 = 66,846.72 : x
  2. Step 2: Convert to fraction form
    120,561.68/166,374.30 = 66,846.72/x
  3. Step 3: Cross multiply
    120,561.68x = 166,374.30 × 66,846.72
  4. Step 4: Simplify right side
    120,561.68x = 11,121,576,247.30
  5. Step 5: Solve for x
    x = 11,121,576,247.30/120,561.68
  6. Step 6: Final answer
    x = 92,248.02

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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.