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Finding the Fourth Proportional to 73,226.80, 109,840.20 and 60,979.60

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Solution

The fourth proportional to 73,226.80, 109,840.20 and 60,979.60 is: 91,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,226.80 : 109,840.20 = 60,979.60 : x
  2. Step 2: Convert to fraction form
    73,226.80/109,840.20 = 60,979.60/x
  3. Step 3: Cross multiply
    73,226.80x = 109,840.20 × 60,979.60
  4. Step 4: Simplify right side
    73,226.80x = 6,698,011,459.92
  5. Step 5: Solve for x
    x = 6,698,011,459.92/73,226.80
  6. Step 6: Final answer
    x = 91,469.40

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1.5x scale

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.