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Finding the Fourth Proportional to 2,608,893.16, 3,913,369.86 and 787,273.88

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Solution

The fourth proportional to 2,608,893.16, 3,913,369.86 and 787,273.88 is: 1,180,919.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608,893.16 : 3,913,369.86 = 787,273.88 : x
  2. Step 2: Convert to fraction form
    2,608,893.16/3,913,369.86 = 787,273.88/x
  3. Step 3: Cross multiply
    2,608,893.16x = 3,913,369.86 × 787,273.88
  4. Step 4: Simplify right side
    2,608,893.16x = 3,080,893,874,526.97
  5. Step 5: Solve for x
    x = 3,080,893,874,526.97/2,608,893.16
  6. Step 6: Final answer
    x = 1,180,919.91

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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.