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Finding the Fourth Proportional to 120,958.98, 166,929.29 and 67,242.81

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Solution

The fourth proportional to 120,958.98, 166,929.29 and 67,242.81 is: 92,798.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,958.98 : 166,929.29 = 67,242.81 : x
  2. Step 2: Convert to fraction form
    120,958.98/166,929.29 = 67,242.81/x
  3. Step 3: Cross multiply
    120,958.98x = 166,929.29 × 67,242.81
  4. Step 4: Simplify right side
    120,958.98x = 11,224,794,530.90
  5. Step 5: Solve for x
    x = 11,224,794,530.90/120,958.98
  6. Step 6: Final answer
    x = 92,798.36

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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.