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Finding the Fourth Proportional to 321,454.56, 443,606.54 and 178,210.92

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Solution

The fourth proportional to 321,454.56, 443,606.54 and 178,210.92 is: 245,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,454.56 : 443,606.54 = 178,210.92 : x
  2. Step 2: Convert to fraction form
    321,454.56/443,606.54 = 178,210.92/x
  3. Step 3: Cross multiply
    321,454.56x = 443,606.54 × 178,210.92
  4. Step 4: Simplify right side
    321,454.56x = 79,055,529,611.42
  5. Step 5: Solve for x
    x = 79,055,529,611.42/321,454.56
  6. Step 6: Final answer
    x = 245,930.65

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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.