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Finding the Fourth Proportional to 68,940.72, 103,337.37 and 35,652.15

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Solution

The fourth proportional to 68,940.72, 103,337.37 and 35,652.15 is: 53,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,940.72 : 103,337.37 = 35,652.15 : x
  2. Step 2: Convert to fraction form
    68,940.72/103,337.37 = 35,652.15/x
  3. Step 3: Cross multiply
    68,940.72x = 103,337.37 × 35,652.15
  4. Step 4: Simplify right side
    68,940.72x = 3,684,199,415.85
  5. Step 5: Solve for x
    x = 3,684,199,415.85/68,940.72
  6. Step 6: Final answer
    x = 53,440.11

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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.