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Finding the Fourth Proportional to 120,959.10, 166,929.26 and 67,245.02

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Solution

The fourth proportional to 120,959.10, 166,929.26 and 67,245.02 is: 92,801.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,959.10 : 166,929.26 = 67,245.02 : x
  2. Step 2: Convert to fraction form
    120,959.10/166,929.26 = 67,245.02/x
  3. Step 3: Cross multiply
    120,959.10x = 166,929.26 × 67,245.02
  4. Step 4: Simplify right side
    120,959.10x = 11,225,161,427.29
  5. Step 5: Solve for x
    x = 11,225,161,427.29/120,959.10
  6. Step 6: Final answer
    x = 92,801.30

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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.