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Finding the Fourth Proportional to 114,620.80, 171,979.80 and 72,533.20

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Solution

The fourth proportional to 114,620.80, 171,979.80 and 72,533.20 is: 108,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,620.80 : 171,979.80 = 72,533.20 : x
  2. Step 2: Convert to fraction form
    114,620.80/171,979.80 = 72,533.20/x
  3. Step 3: Cross multiply
    114,620.80x = 171,979.80 × 72,533.20
  4. Step 4: Simplify right side
    114,620.80x = 12,474,245,229.36
  5. Step 5: Solve for x
    x = 12,474,245,229.36/114,620.80
  6. Step 6: Final answer
    x = 108,830.55

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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.