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Finding the Fourth Proportional to 213,481.37, 320,215.98 and 63,722.90

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Solution

The fourth proportional to 213,481.37, 320,215.98 and 63,722.90 is: 95,582.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,481.37 : 320,215.98 = 63,722.90 : x
  2. Step 2: Convert to fraction form
    213,481.37/320,215.98 = 63,722.90/x
  3. Step 3: Cross multiply
    213,481.37x = 320,215.98 × 63,722.90
  4. Step 4: Simplify right side
    213,481.37x = 20,405,088,952.25
  5. Step 5: Solve for x
    x = 20,405,088,952.25/213,481.37
  6. Step 6: Final answer
    x = 95,582.53

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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.