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Finding the Fourth Proportional to 321,857.79, 444,173.85 and 185,889.21

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Solution

The fourth proportional to 321,857.79, 444,173.85 and 185,889.21 is: 256,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,857.79 : 444,173.85 = 185,889.21 : x
  2. Step 2: Convert to fraction form
    321,857.79/444,173.85 = 185,889.21/x
  3. Step 3: Cross multiply
    321,857.79x = 444,173.85 × 185,889.21
  4. Step 4: Simplify right side
    321,857.79x = 82,567,126,079.16
  5. Step 5: Solve for x
    x = 82,567,126,079.16/321,857.79
  6. Step 6: Final answer
    x = 256,532.94

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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.