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Finding the Fourth Proportional to 321,480.86, 482,221.28 and 108,230.94

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Solution

The fourth proportional to 321,480.86, 482,221.28 and 108,230.94 is: 162,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,480.86 : 482,221.28 = 108,230.94 : x
  2. Step 2: Convert to fraction form
    321,480.86/482,221.28 = 108,230.94/x
  3. Step 3: Cross multiply
    321,480.86x = 482,221.28 × 108,230.94
  4. Step 4: Simplify right side
    321,480.86x = 52,191,262,422.40
  5. Step 5: Solve for x
    x = 52,191,262,422.40/321,480.86
  6. Step 6: Final answer
    x = 162,346.41

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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.