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Finding the Fourth Proportional to 98,943.13, 148,447.50 and 65,793.68

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Solution

The fourth proportional to 98,943.13, 148,447.50 and 65,793.68 is: 98,712.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,943.13 : 148,447.50 = 65,793.68 : x
  2. Step 2: Convert to fraction form
    98,943.13/148,447.50 = 65,793.68/x
  3. Step 3: Cross multiply
    98,943.13x = 148,447.50 × 65,793.68
  4. Step 4: Simplify right side
    98,943.13x = 9,766,907,311.80
  5. Step 5: Solve for x
    x = 9,766,907,311.80/98,943.13
  6. Step 6: Final answer
    x = 98,712.33

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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.