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Finding the Fourth Proportional to 120,610.84, 166,434.78 and 66,893.80

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Solution

The fourth proportional to 120,610.84, 166,434.78 and 66,893.80 is: 92,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,610.84 : 166,434.78 = 66,893.80 : x
  2. Step 2: Convert to fraction form
    120,610.84/166,434.78 = 66,893.80/x
  3. Step 3: Cross multiply
    120,610.84x = 166,434.78 × 66,893.80
  4. Step 4: Simplify right side
    120,610.84x = 11,133,454,886.36
  5. Step 5: Solve for x
    x = 11,133,454,886.36/120,610.84
  6. Step 6: Final answer
    x = 92,308.91

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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.