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Finding the Fourth Proportional to 8,798.43, 12,142.13 and 4,819.77

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Solution

The fourth proportional to 8,798.43, 12,142.13 and 4,819.77 is: 6,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.43 : 12,142.13 = 4,819.77 : x
  2. Step 2: Convert to fraction form
    8,798.43/12,142.13 = 4,819.77/x
  3. Step 3: Cross multiply
    8,798.43x = 12,142.13 × 4,819.77
  4. Step 4: Simplify right side
    8,798.43x = 58,522,273.91
  5. Step 5: Solve for x
    x = 58,522,273.91/8,798.43
  6. Step 6: Final answer
    x = 6,651.45

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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.