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Finding the Fourth Proportional to 98,000.20, 146,805.90 and 53,561.80

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Solution

The fourth proportional to 98,000.20, 146,805.90 and 53,561.80 is: 80,236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,000.20 : 146,805.90 = 53,561.80 : x
  2. Step 2: Convert to fraction form
    98,000.20/146,805.90 = 53,561.80/x
  3. Step 3: Cross multiply
    98,000.20x = 146,805.90 × 53,561.80
  4. Step 4: Simplify right side
    98,000.20x = 7,863,188,254.62
  5. Step 5: Solve for x
    x = 7,863,188,254.62/98,000.20
  6. Step 6: Final answer
    x = 80,236.45

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1.5x scale

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.