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Finding the Fourth Proportional to 120,790.64, 166,690.68 and 67,074.32

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Solution

The fourth proportional to 120,790.64, 166,690.68 and 67,074.32 is: 92,562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,790.64 : 166,690.68 = 67,074.32 : x
  2. Step 2: Convert to fraction form
    120,790.64/166,690.68 = 67,074.32/x
  3. Step 3: Cross multiply
    120,790.64x = 166,690.68 × 67,074.32
  4. Step 4: Simplify right side
    120,790.64x = 11,180,664,011.34
  5. Step 5: Solve for x
    x = 11,180,664,011.34/120,790.64
  6. Step 6: Final answer
    x = 92,562.34

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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.