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Finding the Fourth Proportional to 98,839.20, 148,269.60 and 95,728.80

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Solution

The fourth proportional to 98,839.20, 148,269.60 and 95,728.80 is: 143,603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,839.20 : 148,269.60 = 95,728.80 : x
  2. Step 2: Convert to fraction form
    98,839.20/148,269.60 = 95,728.80/x
  3. Step 3: Cross multiply
    98,839.20x = 148,269.60 × 95,728.80
  4. Step 4: Simplify right side
    98,839.20x = 14,193,670,884.48
  5. Step 5: Solve for x
    x = 14,193,670,884.48/98,839.20
  6. Step 6: Final answer
    x = 143,603.66

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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.