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Finding the Fourth Proportional to 71,694.93, 98,912.57 and 43,390.29

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Solution

The fourth proportional to 71,694.93, 98,912.57 and 43,390.29 is: 59,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,694.93 : 98,912.57 = 43,390.29 : x
  2. Step 2: Convert to fraction form
    71,694.93/98,912.57 = 43,390.29/x
  3. Step 3: Cross multiply
    71,694.93x = 98,912.57 × 43,390.29
  4. Step 4: Simplify right side
    71,694.93x = 4,291,844,879.99
  5. Step 5: Solve for x
    x = 4,291,844,879.99/71,694.93
  6. Step 6: Final answer
    x = 59,862.60

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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.