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Finding the Fourth Proportional to 783,198.64, 1,080,987.96 and 443,854

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Solution

The fourth proportional to 783,198.64, 1,080,987.96 and 443,854 is: 612,617.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,198.64 : 1,080,987.96 = 443,854 : x
  2. Step 2: Convert to fraction form
    783,198.64/1,080,987.96 = 443,854/x
  3. Step 3: Cross multiply
    783,198.64x = 1,080,987.96 × 443,854
  4. Step 4: Simplify right side
    783,198.64x = 479,800,829,997.84
  5. Step 5: Solve for x
    x = 479,800,829,997.84/783,198.64
  6. Step 6: Final answer
    x = 612,617.04

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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.