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Finding the Fourth Proportional to 5,322,762.48, 7,984,143.88 and 1,679,861.56

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Solution

The fourth proportional to 5,322,762.48, 7,984,143.88 and 1,679,861.56 is: 2,519,792.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322,762.48 : 7,984,143.88 = 1,679,861.56 : x
  2. Step 2: Convert to fraction form
    5,322,762.48/7,984,143.88 = 1,679,861.56/x
  3. Step 3: Cross multiply
    5,322,762.48x = 7,984,143.88 × 1,679,861.56
  4. Step 4: Simplify right side
    5,322,762.48x = 13,412,256,393,521.25
  5. Step 5: Solve for x
    x = 13,412,256,393,521.25/5,322,762.48
  6. Step 6: Final answer
    x = 2,519,792.39

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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.