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Finding the Fourth Proportional to 98,694.80, 147,610.20 and 88,240.40

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Solution

The fourth proportional to 98,694.80, 147,610.20 and 88,240.40 is: 131,974.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,694.80 : 147,610.20 = 88,240.40 : x
  2. Step 2: Convert to fraction form
    98,694.80/147,610.20 = 88,240.40/x
  3. Step 3: Cross multiply
    98,694.80x = 147,610.20 × 88,240.40
  4. Step 4: Simplify right side
    98,694.80x = 13,025,183,092.08
  5. Step 5: Solve for x
    x = 13,025,183,092.08/98,694.80
  6. Step 6: Final answer
    x = 131,974.36

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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.