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Finding the Fourth Proportional to 4,678,764.86, 7,008,356.99 and 3,762,997.90

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Solution

The fourth proportional to 4,678,764.86, 7,008,356.99 and 3,762,997.90 is: 5,636,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678,764.86 : 7,008,356.99 = 3,762,997.90 : x
  2. Step 2: Convert to fraction form
    4,678,764.86/7,008,356.99 = 3,762,997.90/x
  3. Step 3: Cross multiply
    4,678,764.86x = 7,008,356.99 × 3,762,997.90
  4. Step 4: Simplify right side
    4,678,764.86x = 26,372,432,627,706.92
  5. Step 5: Solve for x
    x = 26,372,432,627,706.92/4,678,764.86
  6. Step 6: Final answer
    x = 5,636,622.78

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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.