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Finding the Fourth Proportional to 7,136,841.98, 9,848,817.32 and 3,873,656.54

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Solution

The fourth proportional to 7,136,841.98, 9,848,817.32 and 3,873,656.54 is: 5,345,632.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136,841.98 : 9,848,817.32 = 3,873,656.54 : x
  2. Step 2: Convert to fraction form
    7,136,841.98/9,848,817.32 = 3,873,656.54/x
  3. Step 3: Cross multiply
    7,136,841.98x = 9,848,817.32 × 3,873,656.54
  4. Step 4: Simplify right side
    7,136,841.98x = 38,150,935,554,270.91
  5. Step 5: Solve for x
    x = 38,150,935,554,270.91/7,136,841.98
  6. Step 6: Final answer
    x = 5,345,632.66

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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.