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Finding the Fourth Proportional to 324,321.22, 486,528.34 and 99,700.49

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Solution

The fourth proportional to 324,321.22, 486,528.34 and 99,700.49 is: 149,565.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,321.22 : 486,528.34 = 99,700.49 : x
  2. Step 2: Convert to fraction form
    324,321.22/486,528.34 = 99,700.49/x
  3. Step 3: Cross multiply
    324,321.22x = 486,528.34 × 99,700.49
  4. Step 4: Simplify right side
    324,321.22x = 48,507,112,919.83
  5. Step 5: Solve for x
    x = 48,507,112,919.83/324,321.22
  6. Step 6: Final answer
    x = 149,565.03

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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.