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Finding the Fourth Proportional to 120,903.64, 166,851.08 and 67,190.92

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Solution

The fourth proportional to 120,903.64, 166,851.08 and 67,190.92 is: 92,725.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,903.64 : 166,851.08 = 67,190.92 : x
  2. Step 2: Convert to fraction form
    120,903.64/166,851.08 = 67,190.92/x
  3. Step 3: Cross multiply
    120,903.64x = 166,851.08 × 67,190.92
  4. Step 4: Simplify right side
    120,903.64x = 11,210,877,568.19
  5. Step 5: Solve for x
    x = 11,210,877,568.19/120,903.64
  6. Step 6: Final answer
    x = 92,725.72

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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.