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Finding the Fourth Proportional to 3,954,689.20, 5,930,867.40 and 1,557,737.20

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Solution

The fourth proportional to 3,954,689.20, 5,930,867.40 and 1,557,737.20 is: 2,336,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954,689.20 : 5,930,867.40 = 1,557,737.20 : x
  2. Step 2: Convert to fraction form
    3,954,689.20/5,930,867.40 = 1,557,737.20/x
  3. Step 3: Cross multiply
    3,954,689.20x = 5,930,867.40 × 1,557,737.20
  4. Step 4: Simplify right side
    3,954,689.20x = 9,238,732,777,247.28
  5. Step 5: Solve for x
    x = 9,238,732,777,247.28/3,954,689.20
  6. Step 6: Final answer
    x = 2,336,146.36

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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.