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Finding the Fourth Proportional to 324,458.64, 486,649.62 and 99,818.64

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Solution

The fourth proportional to 324,458.64, 486,649.62 and 99,818.64 is: 149,716.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,458.64 : 486,649.62 = 99,818.64 : x
  2. Step 2: Convert to fraction form
    324,458.64/486,649.62 = 99,818.64/x
  3. Step 3: Cross multiply
    324,458.64x = 486,649.62 × 99,818.64
  4. Step 4: Simplify right side
    324,458.64x = 48,576,703,224.92
  5. Step 5: Solve for x
    x = 48,576,703,224.92/324,458.64
  6. Step 6: Final answer
    x = 149,716.16

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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.