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Finding the Fourth Proportional to 68,206.60, 102,528.60 and 48,620.80

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Solution

The fourth proportional to 68,206.60, 102,528.60 and 48,620.80 is: 73,087.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,206.60 : 102,528.60 = 48,620.80 : x
  2. Step 2: Convert to fraction form
    68,206.60/102,528.60 = 48,620.80/x
  3. Step 3: Cross multiply
    68,206.60x = 102,528.60 × 48,620.80
  4. Step 4: Simplify right side
    68,206.60x = 4,985,022,554.88
  5. Step 5: Solve for x
    x = 4,985,022,554.88/68,206.60
  6. Step 6: Final answer
    x = 73,087.10

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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.