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Finding the Fourth Proportional to 220,204.80, 330,307.20 and 62,431.20

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Solution

The fourth proportional to 220,204.80, 330,307.20 and 62,431.20 is: 93,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,204.80 : 330,307.20 = 62,431.20 : x
  2. Step 2: Convert to fraction form
    220,204.80/330,307.20 = 62,431.20/x
  3. Step 3: Cross multiply
    220,204.80x = 330,307.20 × 62,431.20
  4. Step 4: Simplify right side
    220,204.80x = 20,621,474,864.64
  5. Step 5: Solve for x
    x = 20,621,474,864.64/220,204.80
  6. Step 6: Final answer
    x = 93,646.80

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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.