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Finding the Fourth Proportional to 3,948,947.56, 5,923,421.38 and 957,131.56

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Solution

The fourth proportional to 3,948,947.56, 5,923,421.38 and 957,131.56 is: 1,435,697.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948,947.56 : 5,923,421.38 = 957,131.56 : x
  2. Step 2: Convert to fraction form
    3,948,947.56/5,923,421.38 = 957,131.56/x
  3. Step 3: Cross multiply
    3,948,947.56x = 5,923,421.38 × 957,131.56
  4. Step 4: Simplify right side
    3,948,947.56x = 5,669,493,545,976.75
  5. Step 5: Solve for x
    x = 5,669,493,545,976.75/3,948,947.56
  6. Step 6: Final answer
    x = 1,435,697.35

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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.