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Finding the Fourth Proportional to 3,947,661.07, 5,920,605.88 and 1,815,696.91

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Solution

The fourth proportional to 3,947,661.07, 5,920,605.88 and 1,815,696.91 is: 2,723,137.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947,661.07 : 5,920,605.88 = 1,815,696.91 : x
  2. Step 2: Convert to fraction form
    3,947,661.07/5,920,605.88 = 1,815,696.91/x
  3. Step 3: Cross multiply
    3,947,661.07x = 5,920,605.88 × 1,815,696.91
  4. Step 4: Simplify right side
    3,947,661.07x = 10,750,025,801,643.83
  5. Step 5: Solve for x
    x = 10,750,025,801,643.83/3,947,661.07
  6. Step 6: Final answer
    x = 2,723,137.98

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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.