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Finding the Fourth Proportional to 221,806.62, 332,661.06 and 64,000.80

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Solution

The fourth proportional to 221,806.62, 332,661.06 and 64,000.80 is: 95,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,806.62 : 332,661.06 = 64,000.80 : x
  2. Step 2: Convert to fraction form
    221,806.62/332,661.06 = 64,000.80/x
  3. Step 3: Cross multiply
    221,806.62x = 332,661.06 × 64,000.80
  4. Step 4: Simplify right side
    221,806.62x = 21,290,573,968.85
  5. Step 5: Solve for x
    x = 21,290,573,968.85/221,806.62
  6. Step 6: Final answer
    x = 95,987.10

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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.