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Finding the Fourth Proportional to 73,806.80, 110,710.20 and 68,104.40

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Solution

The fourth proportional to 73,806.80, 110,710.20 and 68,104.40 is: 102,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,806.80 : 110,710.20 = 68,104.40 : x
  2. Step 2: Convert to fraction form
    73,806.80/110,710.20 = 68,104.40/x
  3. Step 3: Cross multiply
    73,806.80x = 110,710.20 × 68,104.40
  4. Step 4: Simplify right side
    73,806.80x = 7,539,851,744.88
  5. Step 5: Solve for x
    x = 7,539,851,744.88/73,806.80
  6. Step 6: Final answer
    x = 102,156.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.