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Finding the Fourth Proportional to 782,781.78, 1,080,238.86 and 443,250

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Solution

The fourth proportional to 782,781.78, 1,080,238.86 and 443,250 is: 611,685.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,781.78 : 1,080,238.86 = 443,250 : x
  2. Step 2: Convert to fraction form
    782,781.78/1,080,238.86 = 443,250/x
  3. Step 3: Cross multiply
    782,781.78x = 1,080,238.86 × 443,250
  4. Step 4: Simplify right side
    782,781.78x = 478,815,874,695.00
  5. Step 5: Solve for x
    x = 478,815,874,695.00/782,781.78
  6. Step 6: Final answer
    x = 611,685.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.