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Finding the Fourth Proportional to 68,793.30, 103,189.95 and 53,222.10

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Solution

The fourth proportional to 68,793.30, 103,189.95 and 53,222.10 is: 79,833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,793.30 : 103,189.95 = 53,222.10 : x
  2. Step 2: Convert to fraction form
    68,793.30/103,189.95 = 53,222.10/x
  3. Step 3: Cross multiply
    68,793.30x = 103,189.95 × 53,222.10
  4. Step 4: Simplify right side
    68,793.30x = 5,491,985,837.90
  5. Step 5: Solve for x
    x = 5,491,985,837.90/68,793.30
  6. Step 6: Final answer
    x = 79,833.15

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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.