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Finding the Fourth Proportional to 72,386.85, 108,581.85 and 50,951.97

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Solution

The fourth proportional to 72,386.85, 108,581.85 and 50,951.97 is: 76,429.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,386.85 : 108,581.85 = 50,951.97 : x
  2. Step 2: Convert to fraction form
    72,386.85/108,581.85 = 50,951.97/x
  3. Step 3: Cross multiply
    72,386.85x = 108,581.85 × 50,951.97
  4. Step 4: Simplify right side
    72,386.85x = 5,532,459,163.74
  5. Step 5: Solve for x
    x = 5,532,459,163.74/72,386.85
  6. Step 6: Final answer
    x = 76,429.07

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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.