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Finding the Fourth Proportional to 71,247.59, 98,324.57 and 39,415.94

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Solution

The fourth proportional to 71,247.59, 98,324.57 and 39,415.94 is: 54,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,247.59 : 98,324.57 = 39,415.94 : x
  2. Step 2: Convert to fraction form
    71,247.59/98,324.57 = 39,415.94/x
  3. Step 3: Cross multiply
    71,247.59x = 98,324.57 × 39,415.94
  4. Step 4: Simplify right side
    71,247.59x = 3,875,555,351.65
  5. Step 5: Solve for x
    x = 3,875,555,351.65/71,247.59
  6. Step 6: Final answer
    x = 54,395.60

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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.