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Finding the Fourth Proportional to 120,758.52, 166,530.66 and 72,352.62

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Solution

The fourth proportional to 120,758.52, 166,530.66 and 72,352.62 is: 99,777.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,758.52 : 166,530.66 = 72,352.62 : x
  2. Step 2: Convert to fraction form
    120,758.52/166,530.66 = 72,352.62/x
  3. Step 3: Cross multiply
    120,758.52x = 166,530.66 × 72,352.62
  4. Step 4: Simplify right side
    120,758.52x = 12,048,929,561.33
  5. Step 5: Solve for x
    x = 12,048,929,561.33/120,758.52
  6. Step 6: Final answer
    x = 99,777.06

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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.