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Finding the Fourth Proportional to 311,448.48, 467,173.44 and 86,809.44

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Solution

The fourth proportional to 311,448.48, 467,173.44 and 86,809.44 is: 130,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,448.48 : 467,173.44 = 86,809.44 : x
  2. Step 2: Convert to fraction form
    311,448.48/467,173.44 = 86,809.44/x
  3. Step 3: Cross multiply
    311,448.48x = 467,173.44 × 86,809.44
  4. Step 4: Simplify right side
    311,448.48x = 40,555,064,709.27
  5. Step 5: Solve for x
    x = 40,555,064,709.27/311,448.48
  6. Step 6: Final answer
    x = 130,214.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.