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Finding the Fourth Proportional to 98,406.20, 147,609.30 and 36,068.60

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Solution

The fourth proportional to 98,406.20, 147,609.30 and 36,068.60 is: 54,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,406.20 : 147,609.30 = 36,068.60 : x
  2. Step 2: Convert to fraction form
    98,406.20/147,609.30 = 36,068.60/x
  3. Step 3: Cross multiply
    98,406.20x = 147,609.30 × 36,068.60
  4. Step 4: Simplify right side
    98,406.20x = 5,324,060,797.98
  5. Step 5: Solve for x
    x = 5,324,060,797.98/98,406.20
  6. Step 6: Final answer
    x = 54,102.90

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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.