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Finding the Fourth Proportional to 218,533.80, 327,620.70 and 98,598.60

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Solution

The fourth proportional to 218,533.80, 327,620.70 and 98,598.60 is: 147,816.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,533.80 : 327,620.70 = 98,598.60 : x
  2. Step 2: Convert to fraction form
    218,533.80/327,620.70 = 98,598.60/x
  3. Step 3: Cross multiply
    218,533.80x = 327,620.70 × 98,598.60
  4. Step 4: Simplify right side
    218,533.80x = 32,302,942,351.02
  5. Step 5: Solve for x
    x = 32,302,942,351.02/218,533.80
  6. Step 6: Final answer
    x = 147,816.69

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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.