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Finding the Fourth Proportional to 220,908.80, 331,035.52 and 162,254.08

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Solution

The fourth proportional to 220,908.80, 331,035.52 and 162,254.08 is: 243,140.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,908.80 : 331,035.52 = 162,254.08 : x
  2. Step 2: Convert to fraction form
    220,908.80/331,035.52 = 162,254.08/x
  3. Step 3: Cross multiply
    220,908.80x = 331,035.52 × 162,254.08
  4. Step 4: Simplify right side
    220,908.80x = 53,711,863,744.92
  5. Step 5: Solve for x
    x = 53,711,863,744.92/220,908.80
  6. Step 6: Final answer
    x = 243,140.44

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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.