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Finding the Fourth Proportional to 8,561.18, 12,843.74 and 3,631.01

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Solution

The fourth proportional to 8,561.18, 12,843.74 and 3,631.01 is: 5,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.18 : 12,843.74 = 3,631.01 : x
  2. Step 2: Convert to fraction form
    8,561.18/12,843.74 = 3,631.01/x
  3. Step 3: Cross multiply
    8,561.18x = 12,843.74 × 3,631.01
  4. Step 4: Simplify right side
    8,561.18x = 46,635,748.38
  5. Step 5: Solve for x
    x = 46,635,748.38/8,561.18
  6. Step 6: Final answer
    x = 5,447.35

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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.