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Finding the Fourth Proportional to 321,457.92, 443,613.60 and 185,497.56

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Solution

The fourth proportional to 321,457.92, 443,613.60 and 185,497.56 is: 255,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,457.92 : 443,613.60 = 185,497.56 : x
  2. Step 2: Convert to fraction form
    321,457.92/443,613.60 = 185,497.56/x
  3. Step 3: Cross multiply
    321,457.92x = 443,613.60 × 185,497.56
  4. Step 4: Simplify right side
    321,457.92x = 82,289,240,382.82
  5. Step 5: Solve for x
    x = 82,289,240,382.82/321,457.92
  6. Step 6: Final answer
    x = 255,987.60

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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.