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Finding the Fourth Proportional to 98,891.80, 148,410.60 and 65,600.80

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Solution

The fourth proportional to 98,891.80, 148,410.60 and 65,600.80 is: 98,449.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,891.80 : 148,410.60 = 65,600.80 : x
  2. Step 2: Convert to fraction form
    98,891.80/148,410.60 = 65,600.80/x
  3. Step 3: Cross multiply
    98,891.80x = 148,410.60 × 65,600.80
  4. Step 4: Simplify right side
    98,891.80x = 9,735,854,088.48
  5. Step 5: Solve for x
    x = 9,735,854,088.48/98,891.80
  6. Step 6: Final answer
    x = 98,449.56

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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.