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Finding the Fourth Proportional to 321,041.02, 443,031.17 and 177,797.99

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Solution

The fourth proportional to 321,041.02, 443,031.17 and 177,797.99 is: 245,358.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,041.02 : 443,031.17 = 177,797.99 : x
  2. Step 2: Convert to fraction form
    321,041.02/443,031.17 = 177,797.99/x
  3. Step 3: Cross multiply
    321,041.02x = 443,031.17 × 177,797.99
  4. Step 4: Simplify right side
    321,041.02x = 78,770,051,533.35
  5. Step 5: Solve for x
    x = 78,770,051,533.35/321,041.02
  6. Step 6: Final answer
    x = 245,358.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.