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Finding the Fourth Proportional to 616,982.80, 925,819.80 and 261,936.40

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Solution

The fourth proportional to 616,982.80, 925,819.80 and 261,936.40 is: 393,051.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,982.80 : 925,819.80 = 261,936.40 : x
  2. Step 2: Convert to fraction form
    616,982.80/925,819.80 = 261,936.40/x
  3. Step 3: Cross multiply
    616,982.80x = 925,819.80 × 261,936.40
  4. Step 4: Simplify right side
    616,982.80x = 242,505,905,460.72
  5. Step 5: Solve for x
    x = 242,505,905,460.72/616,982.80
  6. Step 6: Final answer
    x = 393,051.32

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.