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Finding the Fourth Proportional to 325,869.20, 488,803.80 and 276,661.70

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Solution

The fourth proportional to 325,869.20, 488,803.80 and 276,661.70 is: 414,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,869.20 : 488,803.80 = 276,661.70 : x
  2. Step 2: Convert to fraction form
    325,869.20/488,803.80 = 276,661.70/x
  3. Step 3: Cross multiply
    325,869.20x = 488,803.80 × 276,661.70
  4. Step 4: Simplify right side
    325,869.20x = 135,233,290,274.46
  5. Step 5: Solve for x
    x = 135,233,290,274.46/325,869.20
  6. Step 6: Final answer
    x = 414,992.55

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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.