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Finding the Fourth Proportional to 121,181.52, 167,235.40 and 70,193.44

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Solution

The fourth proportional to 121,181.52, 167,235.40 and 70,193.44 is: 96,869.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,181.52 : 167,235.40 = 70,193.44 : x
  2. Step 2: Convert to fraction form
    121,181.52/167,235.40 = 70,193.44/x
  3. Step 3: Cross multiply
    121,181.52x = 167,235.40 × 70,193.44
  4. Step 4: Simplify right side
    121,181.52x = 11,738,828,312.56
  5. Step 5: Solve for x
    x = 11,738,828,312.56/121,181.52
  6. Step 6: Final answer
    x = 96,869.79

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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.