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Finding the Fourth Proportional to 694,658.04, 1,041,987.78 and 221,343

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Solution

The fourth proportional to 694,658.04, 1,041,987.78 and 221,343 is: 332,014.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,658.04 : 1,041,987.78 = 221,343 : x
  2. Step 2: Convert to fraction form
    694,658.04/1,041,987.78 = 221,343/x
  3. Step 3: Cross multiply
    694,658.04x = 1,041,987.78 × 221,343
  4. Step 4: Simplify right side
    694,658.04x = 230,636,701,188.54
  5. Step 5: Solve for x
    x = 230,636,701,188.54/694,658.04
  6. Step 6: Final answer
    x = 332,014.73

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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.