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Finding the Fourth Proportional to 3,868,693.88, 5,338,602.51 and 2,149,777.49

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Solution

The fourth proportional to 3,868,693.88, 5,338,602.51 and 2,149,777.49 is: 2,966,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868,693.88 : 5,338,602.51 = 2,149,777.49 : x
  2. Step 2: Convert to fraction form
    3,868,693.88/5,338,602.51 = 2,149,777.49/x
  3. Step 3: Cross multiply
    3,868,693.88x = 5,338,602.51 × 2,149,777.49
  4. Step 4: Simplify right side
    3,868,693.88x = 11,476,807,493,306.61
  5. Step 5: Solve for x
    x = 11,476,807,493,306.61/3,868,693.88
  6. Step 6: Final answer
    x = 2,966,584.55

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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.