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Finding the Fourth Proportional to 321,221.95, 443,267.72 and 177,973.45

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Solution

The fourth proportional to 321,221.95, 443,267.72 and 177,973.45 is: 245,593.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,221.95 : 443,267.72 = 177,973.45 : x
  2. Step 2: Convert to fraction form
    321,221.95/443,267.72 = 177,973.45/x
  3. Step 3: Cross multiply
    321,221.95x = 443,267.72 × 177,973.45
  4. Step 4: Simplify right side
    321,221.95x = 78,889,882,295.83
  5. Step 5: Solve for x
    x = 78,889,882,295.83/321,221.95
  6. Step 6: Final answer
    x = 245,593.07

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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.