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Finding the Fourth Proportional to 168,734.28, 253,005.57 and 68,777.40

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Solution

The fourth proportional to 168,734.28, 253,005.57 and 68,777.40 is: 103,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,734.28 : 253,005.57 = 68,777.40 : x
  2. Step 2: Convert to fraction form
    168,734.28/253,005.57 = 68,777.40/x
  3. Step 3: Cross multiply
    168,734.28x = 253,005.57 × 68,777.40
  4. Step 4: Simplify right side
    168,734.28x = 17,401,065,290.12
  5. Step 5: Solve for x
    x = 17,401,065,290.12/168,734.28
  6. Step 6: Final answer
    x = 103,127.03

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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.