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Finding the Fourth Proportional to 104,772.80, 157,198.08 and 48,640.64

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Solution

The fourth proportional to 104,772.80, 157,198.08 and 48,640.64 is: 72,979.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,772.80 : 157,198.08 = 48,640.64 : x
  2. Step 2: Convert to fraction form
    104,772.80/157,198.08 = 48,640.64/x
  3. Step 3: Cross multiply
    104,772.80x = 157,198.08 × 48,640.64
  4. Step 4: Simplify right side
    104,772.80x = 7,646,215,217.97
  5. Step 5: Solve for x
    x = 7,646,215,217.97/104,772.80
  6. Step 6: Final answer
    x = 72,979.01

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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.