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Finding the Fourth Proportional to 70,126.08, 105,219.95 and 36,838.41

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Solution

The fourth proportional to 70,126.08, 105,219.95 and 36,838.41 is: 55,273.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,126.08 : 105,219.95 = 36,838.41 : x
  2. Step 2: Convert to fraction form
    70,126.08/105,219.95 = 36,838.41/x
  3. Step 3: Cross multiply
    70,126.08x = 105,219.95 × 36,838.41
  4. Step 4: Simplify right side
    70,126.08x = 3,876,135,474.09
  5. Step 5: Solve for x
    x = 3,876,135,474.09/70,126.08
  6. Step 6: Final answer
    x = 55,273.81

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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.