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Finding the Fourth Proportional to 7,244,677.71, 9,997,894.94 and 3,981,608.10

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Solution

The fourth proportional to 7,244,677.71, 9,997,894.94 and 3,981,608.10 is: 5,494,750.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,244,677.71 : 9,997,894.94 = 3,981,608.10 : x
  2. Step 2: Convert to fraction form
    7,244,677.71/9,997,894.94 = 3,981,608.10/x
  3. Step 3: Cross multiply
    7,244,677.71x = 9,997,894.94 × 3,981,608.10
  4. Step 4: Simplify right side
    7,244,677.71x = 39,807,699,456,144.98
  5. Step 5: Solve for x
    x = 39,807,699,456,144.98/7,244,677.71
  6. Step 6: Final answer
    x = 5,494,750.91

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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.