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Finding the Fourth Proportional to 92,896.78, 139,212.30 and 74,233.56

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Solution

The fourth proportional to 92,896.78, 139,212.30 and 74,233.56 is: 111,244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,896.78 : 139,212.30 = 74,233.56 : x
  2. Step 2: Convert to fraction form
    92,896.78/139,212.30 = 74,233.56/x
  3. Step 3: Cross multiply
    92,896.78x = 139,212.30 × 74,233.56
  4. Step 4: Simplify right side
    92,896.78x = 10,334,224,624.79
  5. Step 5: Solve for x
    x = 10,334,224,624.79/92,896.78
  6. Step 6: Final answer
    x = 111,244.16

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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.