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Finding the Fourth Proportional to 321,653.94, 443,884.59 and 178,416.42

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Solution

The fourth proportional to 321,653.94, 443,884.59 and 178,416.42 is: 246,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,653.94 : 443,884.59 = 178,416.42 : x
  2. Step 2: Convert to fraction form
    321,653.94/443,884.59 = 178,416.42/x
  3. Step 3: Cross multiply
    321,653.94x = 443,884.59 × 178,416.42
  4. Step 4: Simplify right side
    321,653.94x = 79,196,299,440.97
  5. Step 5: Solve for x
    x = 79,196,299,440.97/321,653.94
  6. Step 6: Final answer
    x = 246,215.85

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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.