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Finding the Fourth Proportional to 3,907,286.54, 5,857,800.32 and 1,856,918.05

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Solution

The fourth proportional to 3,907,286.54, 5,857,800.32 and 1,856,918.05 is: 2,783,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907,286.54 : 5,857,800.32 = 1,856,918.05 : x
  2. Step 2: Convert to fraction form
    3,907,286.54/5,857,800.32 = 1,856,918.05/x
  3. Step 3: Cross multiply
    3,907,286.54x = 5,857,800.32 × 1,856,918.05
  4. Step 4: Simplify right side
    3,907,286.54x = 10,877,455,137,501.57
  5. Step 5: Solve for x
    x = 10,877,455,137,501.57/3,907,286.54
  6. Step 6: Final answer
    x = 2,783,889.80

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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.