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Finding the Fourth Proportional to 8,607.99, 12,891.21 and 4,898.97

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Solution

The fourth proportional to 8,607.99, 12,891.21 and 4,898.97 is: 7,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.99 : 12,891.21 = 4,898.97 : x
  2. Step 2: Convert to fraction form
    8,607.99/12,891.21 = 4,898.97/x
  3. Step 3: Cross multiply
    8,607.99x = 12,891.21 × 4,898.97
  4. Step 4: Simplify right side
    8,607.99x = 63,153,651.05
  5. Step 5: Solve for x
    x = 63,153,651.05/8,607.99
  6. Step 6: Final answer
    x = 7,336.63

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1.5x scale

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.