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Finding the Fourth Proportional to 120,959.20, 166,897.92 and 73,203.04

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Solution

The fourth proportional to 120,959.20, 166,897.92 and 73,203.04 is: 101,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,959.20 : 166,897.92 = 73,203.04 : x
  2. Step 2: Convert to fraction form
    120,959.20/166,897.92 = 73,203.04/x
  3. Step 3: Cross multiply
    120,959.20x = 166,897.92 × 73,203.04
  4. Step 4: Simplify right side
    120,959.20x = 12,217,435,113.68
  5. Step 5: Solve for x
    x = 12,217,435,113.68/120,959.20
  6. Step 6: Final answer
    x = 101,004.60

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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.