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Finding the Fourth Proportional to 321,069.54, 443,056.50 and 177,821.04

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Solution

The fourth proportional to 321,069.54, 443,056.50 and 177,821.04 is: 245,382.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,069.54 : 443,056.50 = 177,821.04 : x
  2. Step 2: Convert to fraction form
    321,069.54/443,056.50 = 177,821.04/x
  3. Step 3: Cross multiply
    321,069.54x = 443,056.50 × 177,821.04
  4. Step 4: Simplify right side
    321,069.54x = 78,784,767,608.76
  5. Step 5: Solve for x
    x = 78,784,767,608.76/321,069.54
  6. Step 6: Final answer
    x = 245,382.25

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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.