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Finding the Fourth Proportional to 6,986,575.62, 9,641,375.56 and 3,930,782.58

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Solution

The fourth proportional to 6,986,575.62, 9,641,375.56 and 3,930,782.58 is: 5,424,424.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986,575.62 : 9,641,375.56 = 3,930,782.58 : x
  2. Step 2: Convert to fraction form
    6,986,575.62/9,641,375.56 = 3,930,782.58/x
  3. Step 3: Cross multiply
    6,986,575.62x = 9,641,375.56 × 3,930,782.58
  4. Step 4: Simplify right side
    6,986,575.62x = 37,898,151,098,485.75
  5. Step 5: Solve for x
    x = 37,898,151,098,485.75/6,986,575.62
  6. Step 6: Final answer
    x = 5,424,424.38

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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.