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Finding the Fourth Proportional to 73,221.65, 109,718.87 and 50,776.10

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Solution

The fourth proportional to 73,221.65, 109,718.87 and 50,776.10 is: 76,085.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,221.65 : 109,718.87 = 50,776.10 : x
  2. Step 2: Convert to fraction form
    73,221.65/109,718.87 = 50,776.10/x
  3. Step 3: Cross multiply
    73,221.65x = 109,718.87 × 50,776.10
  4. Step 4: Simplify right side
    73,221.65x = 5,571,096,061.13
  5. Step 5: Solve for x
    x = 5,571,096,061.13/73,221.65
  6. Step 6: Final answer
    x = 76,085.37

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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.