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Finding the Fourth Proportional to 321,934.88, 482,994.48 and 155,816.48

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Solution

The fourth proportional to 321,934.88, 482,994.48 and 155,816.48 is: 233,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,934.88 : 482,994.48 = 155,816.48 : x
  2. Step 2: Convert to fraction form
    321,934.88/482,994.48 = 155,816.48/x
  3. Step 3: Cross multiply
    321,934.88x = 482,994.48 × 155,816.48
  4. Step 4: Simplify right side
    321,934.88x = 75,258,499,733.03
  5. Step 5: Solve for x
    x = 75,258,499,733.03/321,934.88
  6. Step 6: Final answer
    x = 233,769.33

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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.