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Finding the Fourth Proportional to 74,491.65, 102,697.85 and 50,576.81

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Solution

The fourth proportional to 74,491.65, 102,697.85 and 50,576.81 is: 69,727.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,491.65 : 102,697.85 = 50,576.81 : x
  2. Step 2: Convert to fraction form
    74,491.65/102,697.85 = 50,576.81/x
  3. Step 3: Cross multiply
    74,491.65x = 102,697.85 × 50,576.81
  4. Step 4: Simplify right side
    74,491.65x = 5,194,129,259.81
  5. Step 5: Solve for x
    x = 5,194,129,259.81/74,491.65
  6. Step 6: Final answer
    x = 69,727.67

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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.