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Finding the Fourth Proportional to 220,810.80, 331,216.20 and 54,598.80

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Solution

The fourth proportional to 220,810.80, 331,216.20 and 54,598.80 is: 81,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,810.80 : 331,216.20 = 54,598.80 : x
  2. Step 2: Convert to fraction form
    220,810.80/331,216.20 = 54,598.80/x
  3. Step 3: Cross multiply
    220,810.80x = 331,216.20 × 54,598.80
  4. Step 4: Simplify right side
    220,810.80x = 18,084,007,060.56
  5. Step 5: Solve for x
    x = 18,084,007,060.56/220,810.80
  6. Step 6: Final answer
    x = 81,898.20

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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.