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Finding the Fourth Proportional to 7,136,872.47, 9,848,620.20 and 3,873,617.10

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Solution

The fourth proportional to 7,136,872.47, 9,848,620.20 and 3,873,617.10 is: 5,345,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136,872.47 : 9,848,620.20 = 3,873,617.10 : x
  2. Step 2: Convert to fraction form
    7,136,872.47/9,848,620.20 = 3,873,617.10/x
  3. Step 3: Cross multiply
    7,136,872.47x = 9,848,620.20 × 3,873,617.10
  4. Step 4: Simplify right side
    7,136,872.47x = 38,149,783,618,125.42
  5. Step 5: Solve for x
    x = 38,149,783,618,125.42/7,136,872.47
  6. Step 6: Final answer
    x = 5,345,448.41

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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.