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Finding the Fourth Proportional to 7,718,819.86, 11,576,604.39 and 4,978,157.86

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Solution

The fourth proportional to 7,718,819.86, 11,576,604.39 and 4,978,157.86 is: 7,466,188.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718,819.86 : 11,576,604.39 = 4,978,157.86 : x
  2. Step 2: Convert to fraction form
    7,718,819.86/11,576,604.39 = 4,978,157.86/x
  3. Step 3: Cross multiply
    7,718,819.86x = 11,576,604.39 × 4,978,157.86
  4. Step 4: Simplify right side
    7,718,819.86x = 57,630,164,136,189.02
  5. Step 5: Solve for x
    x = 57,630,164,136,189.02/7,718,819.86
  6. Step 6: Final answer
    x = 7,466,188.51

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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.