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Finding the Fourth Proportional to 4,137,978.94, 5,709,555.33 and 2,418,766.90

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Solution

The fourth proportional to 4,137,978.94, 5,709,555.33 and 2,418,766.90 is: 3,337,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,137,978.94 : 5,709,555.33 = 2,418,766.90 : x
  2. Step 2: Convert to fraction form
    4,137,978.94/5,709,555.33 = 2,418,766.90/x
  3. Step 3: Cross multiply
    4,137,978.94x = 5,709,555.33 × 2,418,766.90
  4. Step 4: Simplify right side
    4,137,978.94x = 13,810,083,445,922.58
  5. Step 5: Solve for x
    x = 13,810,083,445,922.58/4,137,978.94
  6. Step 6: Final answer
    x = 3,337,398.20

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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.