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Finding the Fourth Proportional to 68,604.20, 103,079.10 and 43,656.20

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Solution

The fourth proportional to 68,604.20, 103,079.10 and 43,656.20 is: 65,594.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,604.20 : 103,079.10 = 43,656.20 : x
  2. Step 2: Convert to fraction form
    68,604.20/103,079.10 = 43,656.20/x
  3. Step 3: Cross multiply
    68,604.20x = 103,079.10 × 43,656.20
  4. Step 4: Simplify right side
    68,604.20x = 4,500,041,805.42
  5. Step 5: Solve for x
    x = 4,500,041,805.42/68,604.20
  6. Step 6: Final answer
    x = 65,594.26

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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.