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Finding the Fourth Proportional to 3,973,193.10, 5,959,789.65 and 981,377.10

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Solution

The fourth proportional to 3,973,193.10, 5,959,789.65 and 981,377.10 is: 1,472,065.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,973,193.10 : 5,959,789.65 = 981,377.10 : x
  2. Step 2: Convert to fraction form
    3,973,193.10/5,959,789.65 = 981,377.10/x
  3. Step 3: Cross multiply
    3,973,193.10x = 5,959,789.65 × 981,377.10
  4. Step 4: Simplify right side
    3,973,193.10x = 5,848,801,083,327.02
  5. Step 5: Solve for x
    x = 5,848,801,083,327.02/3,973,193.10
  6. Step 6: Final answer
    x = 1,472,065.65

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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.