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Finding the Fourth Proportional to 74,709.91, 103,096.67 and 40,717.67

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Solution

The fourth proportional to 74,709.91, 103,096.67 and 40,717.67 is: 56,188.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,709.91 : 103,096.67 = 40,717.67 : x
  2. Step 2: Convert to fraction form
    74,709.91/103,096.67 = 40,717.67/x
  3. Step 3: Cross multiply
    74,709.91x = 103,096.67 × 40,717.67
  4. Step 4: Simplify right side
    74,709.91x = 4,197,856,187.16
  5. Step 5: Solve for x
    x = 4,197,856,187.16/74,709.91
  6. Step 6: Final answer
    x = 56,188.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.