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Finding the Fourth Proportional to 439,321.28, 606,256.80 and 248,327.96

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Solution

The fourth proportional to 439,321.28, 606,256.80 and 248,327.96 is: 342,688.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,321.28 : 606,256.80 = 248,327.96 : x
  2. Step 2: Convert to fraction form
    439,321.28/606,256.80 = 248,327.96/x
  3. Step 3: Cross multiply
    439,321.28x = 606,256.80 × 248,327.96
  4. Step 4: Simplify right side
    439,321.28x = 150,550,514,380.13
  5. Step 5: Solve for x
    x = 150,550,514,380.13/439,321.28
  6. Step 6: Final answer
    x = 342,688.87

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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.