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Finding the Fourth Proportional to 321,221.82, 443,267.46 and 177,973.32

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Solution

The fourth proportional to 321,221.82, 443,267.46 and 177,973.32 is: 245,592.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,221.82 : 443,267.46 = 177,973.32 : x
  2. Step 2: Convert to fraction form
    321,221.82/443,267.46 = 177,973.32/x
  3. Step 3: Cross multiply
    321,221.82x = 443,267.46 × 177,973.32
  4. Step 4: Simplify right side
    321,221.82x = 78,889,781,504.17
  5. Step 5: Solve for x
    x = 78,889,781,504.17/321,221.82
  6. Step 6: Final answer
    x = 245,592.85

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1.5x scale

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.