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Finding the Fourth Proportional to 120,700.88, 166,587.12 and 67,003.08

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Solution

The fourth proportional to 120,700.88, 166,587.12 and 67,003.08 is: 92,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,700.88 : 166,587.12 = 67,003.08 : x
  2. Step 2: Convert to fraction form
    120,700.88/166,587.12 = 67,003.08/x
  3. Step 3: Cross multiply
    120,700.88x = 166,587.12 × 67,003.08
  4. Step 4: Simplify right side
    120,700.88x = 11,161,850,128.33
  5. Step 5: Solve for x
    x = 11,161,850,128.33/120,700.88
  6. Step 6: Final answer
    x = 92,475.30

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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.